help finding yaoi name

it’s a yaoi manga where the couple has a big age gap. the uke is older than the seme. i forgot the name and most of the story, but i think i remember there was a part where the uke felt insecure because he was much older and felt the seme could do better? or vice versa, something like that. there was also a flashback where i think the uke got into a fight and the seme later came up to him and asked him to marry him