GUYS: Sex question please answer!!?

so i recently had sex with this guy and it wasn't that great (for me)....so i was wondering was it for him? as soon as i straddled him on the couch and we started making out he was hard. thats good right!? and he came in like 2.5 seconds(during sex)! lol i mean i was like are we done here foreal!? so what do you think?