https://www.mangago.me/read-manga/half_line/
I don't know if this is one of them. ( ᴗˬᴗ)ഒ
Yes!! Thanks bestie ٩(๑❛ᴗ❛๑)۶
Second sounds like - Stockholm syndrome
Oh. Omg. I’m glad I still remember the plot but I am kinda confused when you said football player. Hihi
Anyways, you’re welcome! Happy reading!
It's not that but it's very similar from the setting and the blackmailing part.
Manhwa #1: The seme is a football player return from oversea (Melting Point tee) and the uke is his coach assistant and they decide to have fwb relationship.
Manhwa #2: The setting is like border school/dorm like. Uke is in a group of friends and he had a fwb relationship with one of the friend (not the male lead) but someone mysterious terrorized this couple, but mainly targeting uke's friend he has fwb relationship with. Last chapter I read the uke's friend got thrown off of a bridge but he survived. Also they all rich kids.