It's why are you here I think, hang on it's why something lol
Ok so I went to my read and I THINK you are talking about why are you at my home. If that's not it...then you should totally read it lol
Omg I meant "who invited you" dammit sorry lol
http://www.mangago.me/read-manga/why_did_you_come_to_my_home/?av=2
is it perhaps this one?
Aaah thanks! You got it. I shall check out why did you come to my home too.
The female protagonist used to date this guy back in highschool, but they broke up because she wasn't ready for a relationship. Flashforward and she's now in college and they meet again. Later on they find out their neighbours.