Im pretty realistic when it comes to these things and so i understand that guys dont just go on for hours like the energizer bunny. So if he cums and i havent then im just going to have to go for it again!
Personally i dont believe in having sex with someone unless im really into them (for the most part). So if the guy im with cums early ill let it slide because ill do what i can to get off... lol. Im thankful that in the past when my man or whoever i was with at the time came before me, we'd both just wait then go again instead of him just leaving or going to sleep.