Plz help me out

Guys I’m actually so horrendously down bad for this one sorority girl. Valentines has me thinking about how confused I am. how come girls like that let the worst guys ever walk all over them and don’t even look in my direction. What can I do?? I see her with this other guy all the time and he doesn’t even look her in the eye while she’s just looking at him like he’s the love of her life. I can’t take it bruh. Does anyone here even have a drop of respect for others. Like on a human level. a question for my fellow brothers…how do you look at someone and think yes I’m gonna make her cry tn. Sorry for drunk confessing tn if you read this sweetheart, jus know I can give you more.