I met this girl four years ago and about two years ago we went out but she ended leaving me without an explanation of why. Then she goes out with this guy who doesn't treat her well and she tells me about these and I advice her to stop it since he has been under bad influences. When she finally leaves him, about a month later, I tell her that I like her only to be reject even though she says I am one of the greatest guys she has ever met. During this christmas vacation she meets a guy and they are fliriting for a week and when they finally are out in a social event, he makes out with another girl. I abandoned everything that night and spent the whole night with her. After all of this, she decides to give the guy a second chance because he was drunk, which I find to be an idiotic excuse. What should I do?