Something that's really getting on my nerves lately is the fact that after about 10 minutes of sex I can't restrain myself any longer and I cum against my will. I find the same thing when i'm masturbating to porn, within minutes I feel like cumming and I actually have to look away and think of something revolting, and even then, I come so close it hurts. Now keep in mind i'm not exactly a veteran, i've only had sex twice. Is lasting longer just a matter of experience, the more you do it the longer you can hold off? Or am I doing something wrong? Thanks for any replies.