<human>: I've been dating this girl for a year and a half, and she's always had problems with self-esteem and self-confidence, being an intense people pleaser.

Her last boyfriend Tom got her to sign onto a car loan saying it would only be for 8 months. He almost got her to commit perjury when he was arrested for cocaine (!). She didn't (thank goodness) eventually dumped him, time passed, dated other dudes, and then she started dating me. They were still hanging out as friends when we first started dating (I had no idea about the history, fine by me), and she told me later he was still trying to get back together with her. She eventually told Tom she's taken now, and he found his own girlfriend. Later, my girlfriend discovered the car loan was in fact for SIX YEARS. She asked Tom, who then said he would get his new girlfriend to co-sign for it. I told my girl to keep being nice in case she had to sue Tom for the car (she was the primary loan holder) while she was getting very frustrated at Tom's lies and blowing her off when it came to dealing with this, IE, I'm too sick to call the dealership, then goes out drinking.

Cut to last night, when my girlfriend says Tom is going to go to the dealership, and then asked if we want to double date! I held my emotions in check asking how she felt, and she started to tear up, afraid that I was angry. I smiled and said we're just talking, and she said she might be open to it. Then I got angry. She claims she wants to forgive him, I say have some self-respect. This, on top of other issues, has led me to feel like ending it. She is a pushover, or lying about something. I'm thinking the first one, just completely emotionally stunted. BUT, I'm being a bit of a wuss about this. She says "she can change", she's sorry, she "hasn't been herself lately"... Do I give it another chance? Am I a bad person if I cut my losses and run?

Can you give me a shortened version of the text?
<bot>: My girlfriend's ex lied to get her to sign a car loan, then after dicking her around in taking care of it, asked to double date and she was OPEN TO IT. I am considering breaking up with her.