When I read the premise, I got pissed.... but when the actual story happened, I actually liked it.
The written premise made me think this was one of those dragged out stories where the MC takes a million years to realize his feelings and they get together in the end...
Honestly, it needs to be edited...
Real premise is that a man made a promise to a little child in jest and has a girlfriend, but that little kid grew up and thought it was serious.
By not having the fact that he was much older and humoring a child along with him having a girlfriend, it gives a way different feel...
If anybody starts from the comment section first to see if they should read this cause they hate the written premise...
Give this a shot...