i’m looking for a yaoi!!! not very old

hi i read a yaoi on here about this guy (sorry this is all i really remember) but this blonde uke meets a black hair seme he has glasses sometimes and really wants to sleep with him and the dark hair one says it’s fine and puts a chain around his neck so he doesn’t move (btw this isn’t crazy toxic) and the uke is ok with it and they have sex a few times than the uke ends up falling in love and the seme finds him trying to sleep with someone else in public than rescues him and then a key part of this at the end the uke doesn’t have to wear the chain and laughs about it. but I’ve been searching for it for a few days and I can’t seem to find it. It’s not a very toxic one. It’s probably about 5 or 6 chapters long it’s in black and white but yes if someone can link it or anything i neeeeed to reread it. <3