(Him)Eating her pussy until she orgasms and then getting onto the actual sex, talking dirty to her or even some clean talk about how you feel about her and how she makes you feel, some food added into the equation either for insertion into her(or you if you swing that way) or maybe some cream choc spread etc. If you have to get what you can because of parents being around etc then some sensual touching and teasing rather than sex makes the next encounter a lot better for some people as anticipation is often great foreplay for the mind;-)
Asides from that I'd suggest move out lol