The black haired dude is a and he just groomed her. Of course she's gonna be all head over heels for him, cause HE MESSED WITH HER EMOTIONALLY AND PHYSICALLY. Young girls need to listen and be aware of men like that crap.
I told you in a comment that this was not worth it, he is an unfortunate son of a bitch and the author destroyed the FL.
The horrendous way he looks at Luciano! Oscar tries to look so great but we know that he's AFRAID of him.