I'm searching 4 a yaoi again?

it's about a guy who's in love with his co-worker and one day they went out drinking and he ends up taking advantage of his drunk buddy and then pretends like noth ever happened(since the drunk guy seems to also forget about what happened) and then it turned out that he didn't really forget and then...well I don't remember well since it has been lotsa months and I read a lot but I remember both of them going in some sorta buisness trip and and the seme meets an old friend or old lover and the uke starts to realie his feelings for his co-woker and that's where the last chapter I read ends but I remember it being ongoing so plzzzzzzzzzzzz help