kinda crack.... it's seina anji....
threesome relationship. it's uke, his ex-bf, and new crush. all end up together in the end. ex-bf and crush happen to be old friends from high school. some rivalry there but mostly one-sided lol.
basically uke is homeless and new crush seme invites him to live at his place which is a huge mansion owned by his friend, ex-bf seme. when uke sees it's ex-bf, he's apprehensive living there but rent is so cheap. ex-bf actually likes uke but he asked uke to sleep with other guys cuz of some cuckold kink and uke just walked out.
anyway, they clear that up and uke starts rekindling his feelings for ex-bf. and ofc he still likes the new crush. uke is having sex individually with them, but then the ex-bf comes in during his time with new crush and uke realizes he likes being watched as much as the ex likes watching uke get fucked by another man.
and so they decide to enter a threesome relationship. brief double penetration scene in last chapter. only time where they're actually all 3 having sex.
Rooming with My Two Lovers