A guy I just can't get over

So I just wanted to share the story with someone other than my girls i knand maybe hear some advice.There is this boy I have been into for 10 years now, I've had other relationships but somehow he's always on the back of my mind,(we are both 24 ) and we never have had real relationship,only flirty jokes,gone out a couple times by ourselves,share common circle of friends,but always we both have known there is smth...and we only have hooked up once, due to his behaviour afterwards nothing happened and since then everytime we drink together there is tension, flirt and a little bit of touching but nothing.. when we are sober also.I have always sensed he is the one for me but almost everytime it's me who makes the effort to be more than friends and he never makes the move to go through with it for real which I know, doesn't speak good of him as a man. Now I have a boyfriend with whom everything is great,half an year now and I really see a future with him, rumor in town has it he has a girlfriend even though I'm not completely sure...but last Saturday on a night out with the gang , after we drank he came on to me,we just danced in a sexual way,but nothing more happened...and afterwards again nothing, didn't speak about it.still this night has been in my head for 3 days now and i can't get the memory of his hands out of my system... I don't want to make a move when we are sober again because as i said , it's almost always me who has done it (but everytime we drink it's him who comes on to me) and i know i have a guy by my side but I've started to wonder...so do you think that its worth to try again and risk my relationship or should i just leave this situation as it is,like just a memory i return to from time to time without consequences and also keep things friendly ?