Welcome to Gaia! ::

Alrighty so previously I would masturbate anywhere from 1-3 times a day. But recently since I moved to an apartment with my friend I've caught back to once every other day if that.
My first time having sex had been over the summer with my roommate's ex-girlfriend. He's got no idea she's ever even spent the night with me which she had many times.
Since school started she's been seeing someone else which is fine by me, but just the other night she had stayed the night with me while my roommate went home for the weekend. One thing lead to another and we hooked up again.
So here's my issues...

1)I've never told my friend, nor do I plan to, however it may eventually come out considering she didn't act like it'd be the last time or anything.
2)She has a boyfriend right now but their in a rough patch, should I try to talk her into breaking up with him?
3)When having sex, I seem to last FOREVER, seriously we were going at it pretty good for like, 2 hours before I actually came...Is there anyway I can make it so I don't take so long cause I don't want people to feel like they're disappointing me when they've already come a few times and I still haven't...

Well your friend doesn't have to know. But since it is his ex he might be very upset when he does find out.. whether you tell him or he finds out. He'd probably be more upset if he came home and found you banging her though. But he might not even care; some people just move on with no jealously whatsoever.

If you really do feel guilty about sleeping with her while she has a boyfriend then tell her about how you feel. Say that you don't want to be the "other man" it's either him or you. You probably don't want him to get mad and try to kick your a** for sleeping with his woman.

Hmm; is there anything going on in your mind while you guys are having sex? Are you stressed out? Worried? Anything that might be in the back of your mind could affect your performance. You could try using some lube that might make it slide around easier and stimulate you more...