Help

My way of wording is weird so pls don’t mind it ):

There was this manga I was reading a month ago and I wanted to go back and read it today but couldn’t find it in my “already read” collection. Can someone help me?

What I remember:

The Main guy felt insecure because his childhood BFF only had Sex with him. He was lonely Because the friend went to college and never contacted him again. He then got his Nice/pushover(?) friend to “help him out.” The next day or so the Childhood friend came back and moved down the block and was like “I moved here so you can come over and no one would bother us.” And the bff was like “shouldn’t you bring a girlfriend over instead?” And then the bff was like “wtf You’re my bf wdym gf” and the guy was shook bc he never knew They were dating