<human>: 21yr male. she's 20. she just started going out with this guy i know, about a month now. he's a total player and i know he's going to hurt her in the long run. we(the three of us) spend a lot of time together. he ignores her and downplays anything she does or says unless it's sexual. she and i have had many deep conversations and i've learned a lot about her. she's obsessed with sex for starters, she's been hurt by guys but tends to gravitate towards assholes. i love her, and want the best for her, whether she ends up with me or not. i was feeling all depressed and went on tumblr a bit ago and saw this:    because from what she tells me, this is the truth, she's confused. and he doesn't care about her. 

he's about to leave for 3 weeks in 3 days. im throwing a party in 6 days. she's planning on going. it'll probably be the next time i see her.
  
i need help. what do i tell her?  what should i do? to win her... to make her see she doesn't have to be unhappy with a cheat. one day after they had a fight, we went swimming in the middle of the night, she was so confused and sad with herself. she doesn't trust guys. and then in her fragile state, where any other guy would try to take advantage, i just gave her a hug, told her it's okay, that everything works out in the end. i'm starting to think that's a lie.

the first time i saw her, she caught my eye, and stole my heart.

reddit, please, i love her regardless of what happens, but i can't stand to see her in a position where i know she's going to get hurt. i can't handle another minute without her. and im also a coward. afraid of getting hurt, afraid of making a fool of myself, afraid of losing her by putting her in a position where she would defend him. 

what am i doing?

Can you condense the text into a few key points?
<bot>: i love her. she's with the wrong guy. what should i do to make her she that we belong together, or at the very least, she should know she could have it so much better.