OK so I'm in fb group and someone was ratting about a omegaverse she read but forgot the name and the story goes like this:
"An alpha fell in love with another alpha and things were good but then the alpha had to get marry to the omega brother of the other alpha and he accepted but the other alpha told him they could escape but he told him that he could never give him a son. And he was mean to the alpha that he even told his classmates that he was a slut and also showed his nudes. And he also once he had sex with the omega brother so that his alpha could see and when he finish he went to him and said, I can mark him"
So please if someone knows the name it would be great if you let me know please
The closest thing I could find
http://www.mangago.me/read-manga/scratch_blue/

It was a romance manga, maybe it came around the 2000s, it's about romance but the toxic ones. The FL lives in an apartment building with her family, (she is high school) and one day her childhood friend comes back to the same school as her. I think she has some kind of crush with him. But he is not the Ml, the ML it's a guy who also lives in the same building but I don't remember well but his mom is like in charge of the building, so the guy is cocky and smart. He bullies the FL, but he has a crush on her. So the childhood friend is trying to get revenge by seducing the FL because of something the FL dad do to his family, I think.
That's about all I remember, does anyone know the name?