Me too want to know...
I'm going out on a limb here, but is it this manga?
http://www.mangago.zone/read-manga/usotsuki_wa_dareda/
Sorry but that's not it (though it is a good one lol)
i do remember reading that too. I'm also trying to look for it (i'm looking for it right now, actually). What i do remember is that it's found in a oneshot collection. When I come across it again, I'll link you. :)
it could be one night stand from scarlet
Sorry that's not it either. If it helps I'm pretty sure they were friends from college (but it's not hand which, though it is similar)
Please help me find a manga, I can't remember the title ( of course T_T) but it was yaoi, the guys were friends, and always ran into each other every morning while going to work. One of the guys thought it was a coincidence but the other did it on purpose just to see the other guy