it's not, I remember the manga being longer, at least 6 chaps I think?
Guuuuyyysss!!!!!!! I FOUND It!!!!
http://www.mangago.me/read-manga/usotsuki_na_kimi_no_toriko/
It is, check this out :
http://www.mangago.me/read-manga/usotsuki_na_kimi_no_toriko/
Yeah! it's this one, I believe not the other two, thank you!
Yaoi Manga where guy gets kidnapped by his ex and held captive in his own apartment? Can't remember name.