After getting dressed and gathering all of their stuff, they headed back to Tara's place to change clothes, since they had dinner reservations for 8PM. Tara had a two bedroom apartment, and Marisa had been staying with her during her visit. "It is 7:15, we can't go all sandy like this," Tara said when she glanced at the clock. "Why don't you girls shower, I'll just get changed," Mark offered. "Why don't we all shower together, we've seen each other naked already today," Marisa suggested as she peeled off her bikini and headed to the bathroom. Tara could not believe her cousin was so bold, but she stripped naked and kissed Mark softly. "Come on, big boy," Tara told him as she knelt down and removed his suit. His semi-hard cock sprung out and slapped against her cheek. "Maybe later, if you are really good," Tara teased as she headed to join Marisa. The girls washed each other's hair as Mark rinsed the sand off their bodies. Then as they both washed his hair, all three felt the sexual tension rapidly grow. Mark felt Marisa's hard nipples poking his back as she reached around him and soaped his cock. Before he knew it, she had rinsed him off and was on her knees on the shower floor. Marisa alternated between sucking his cock, and kissing Tara's tummy. "Since when did you start doing that to boys"? Tara asked. "Well Tara, I'm am eighteen and definitely not a virgin," Marisa replied. Mark then took control of the situation, turned Tara around, and entered her from behind. He repeatedly pushed his cock into her halfway and removed it almost completely. He knew how much she loved that. Then, with one long thrust, he shoved his entire eight inches inside her. Marisa scooted over to Tara and kissed her breast and nipples while she touched herself. The shower was soon filled with sensual moans from all three people. "Oh yes....I'm...gotta...cum!" Tara gasped after awhile. She was always very pleased with how long Mark lasted with her. Marisa climaxed so hard from her self-pleasuring, that she almost fell to the floor with the intense pleasure. Mark grunted as his hot cum shot deep inside his lover. After he pulled out, Marisa put his softening cock in her mouth and tasted both his cum and Tara's. As they dried off, Marisa checked the time. It was 8:20, and they had missed their reservation. They ordered pizza, and Tara invited Mark to stay overnight with them since Marisa was sleeping in the guest room. He agreed, and after dinner and TV, they turned in. Early the next morning while Mark was still sleeping, Tara went to the other bedroom and talked to her cousin about her sex life. "Marisa, is there anything you would like to do if you had the chance?" Marisa blushed and replied, "Well I hate to admit it, but I would love to give your boyfriend a blowjob, and maybe, even let him have sex with me." Tara thought it over; she even felt watching her cousin making out with her boyfriend could be rather hot. "OK,I have no problem letting you give Mark a blowjob, any more than that will have to be OK with him as well," Tara offered. She then led Marisa to the guest room where Mark still slept. He was nude,with only a thin sheet covering him. The girls quietly walked to the bed and Tara pulled the sheet down. Mark was aware of a familiar,wonderful, feeling. His eyes did not have to open to realize what was happening; he knew Tara was giving him an early morning oral treatment, as she was so fond of doing whenever he spent the night. "Just relax and enjoy this baby, it's OK with me,"he heard Tara's sweet voice say at the same time his cock was inside a pair of warm wet lips. He opened his eyes and saw Tara standing beside the bed, and knew it had to be Marisa that was sucking him. Pleasure filled him as she very slowly bobbed up and down on his shaft. He rested his head on the pillow as every sensation of her soft lips on his cock aroused him even more. Marisa stopped for a moment, then took his shaft in deeper, at about an inch per minute. The pleasure drove him crazy with desire. Finally, she had his entire length buried deep in her throat. She held it there awhile, and then slid her lips back up his shaft, as slowly as she had gone down. The sensation brought him to the edge, but then she stopped completely and removed him from her mouth. He needed to cum, but she would not let him finish. He knew how much Tara loved to prolong him. She often told him that his orgasms were stronger after delaying, and the quantity was always greater. He could only assume this was Tara's doing, and that she had told the pretty blonde the secret way she enjoyed teasing him. Finally, he felt her tongue lick slowly all the way up one side, and down the other. Mark could not take much more; he needed so badly to let it happen. Tara's hands slowly caressed his balls while Marisa's mouth did its magic. He did not want to say it, but she was doing almost as well as Tara. He was right on the edge now and hoped, this time, she would let him finish. However, Marisa stopped again and removed her mouth. At last, she slid him back deep in her mouth. He approached climax once more, and this time, she let him finish. He lost count of how many times he ejaculated into the blonde's warm mouth. He heard her swallow as she went after every drop. She continued until his hardness faded in her mouth, pulled away, and licked her lips. Mark was very pleased. "That was amazing, how did you do know the way I liked that to be done so well?" "Well, how do you think she did silly?" Tara asked with a playful slap. Tara took over, and gently nibbled and licked Mark's cock until it was fully hard again. Minutes later, Tara felt the pleasurable feeling of his erection as it sank deep inside her. Marisa watched intently and masturbated as her cousin had sex with her lover. Then Tara told him that Marisa wanted to have sex with him, and that is was ok with her. Mark slipped his cock out of her, and quickly inside Marisa. Tara scooted over and kissed her cousin's nipples. It did not take long for Marisa to reach orgasm; her body shivered as the climax overtook her, and sent waves of pleasure all through her body. Mark pulled out and asked both girls to sit on the edge of the bed. He stood in front of them and waved his cock in their faces. They each flicked it with their tongues as it went by. Tara then pushed Mark onto his back and told Marisa to get above him. Tara guided his hard cock deep inside her cousin and watched intently as she slid all the way down on him. As Marisa rode him, Tara straddled his face and ran her pleasure spot over his lips as she watched them go at it. The girls played with each other's breast as they approached their climax. Mark's talented tongue on her clit sent Tara rocking into a tremendous orgasm. Marisa watched in delight as her cousin's body shivered in climax. She rode Mark faster and soon reached her own delightful ending. Mark felt Marisa climax around his cock, and then he needed to finish. "OH girls...I need to cum...where....do you....want me to do it?" he asked, almost out of breath. "You can cum inside her, she's protected, go for it baby," Tara whispered softly. Marisa felt him swell inside her, and as Tara kissed her breast and nipples, Mark spurted his seed inside her. They did not get time for any more play since Marisa had to head for home, but all had greatly enjoyed what had happened.