Can you tell us more? There are a lot of stories with that kind of thing.
it's a yaoi i can't remember much about it
Maybe it’s one of these then?
http://www.mangago.me/read-manga/momichupa_oppabu_osu_time/
http://www.mangago.me/read-manga/kimi_no_shiranai_xx/
http://www.mangago.me/read-manga/i_m_straight_but_my_friend_gets_me_hard/
And the tag if it helps.
http://www.mangago.me/tag/Friends/
thank you so much
there is this manga its about two friends and one fell in love with the other one and try's to have sex with the other. I can't remember the name of it please help me.