Sex with him or refrain and back off?

Theres a guy whom I know for past 2 months.. have been hanging out very close since then..hes so romantic and caring..we would take walks,talk on phone..spend a lot of time together..he says he loves me alll the time..and on the the physical part..we are sooooooo passionate I tell u, every chance we get we are kissing, touching, necking...you name it..and that too soo passionately.. We have also slept..we lov each other.. Thing is nxt week he's goin back to india 4 his marriage(I know , don't yell at us..we jus lov each othr alot n can't help it)..so I'm thinking maybe this last week I shud control and not do sex or anything physical... Maybe will get dignity also from restraining.. He talks about his fianc� and has her pic on his phone n I feel bad so maybe this last week I shouldn't do anything with him? Dont want him to get that last enjoyment.. So No sex..? Advise pleas...