Help finding manga?

Yaoi manga in which the uke is finding a place to move in (in this case, the seme’s place is most fit), but the seme doesn’t want the uke to move in bc he is worried that his body can’t take it. Somehow (i don’t remember) the uke and seme share the same place and after a few days, the uke faints while reading?
I honestly can’t remember what manga it’s from but i wanna reread it. help?