<human>: So here's the story. 

My girlfriend and I have been together for 3 years, and she had always told me that she was very careful about the guys she slept with, and told me that she had only slept with 5 other people before me, and they were majority long-term relationships. 

However, last night, she sat me down and told me that she had been lying to me about the number of guys she had slept with, she said it was a lot more then 5. She told me when she was younger, she was going through a really tough time (bad parents, poor neighborhoods, little to no money) and she got into a lot of drugs, and eventually sex. She told me her first sexual encounter was more of a sexual assault then sex, and it was very damaging to her.

She told me that she had never told anyone else to that day, and I was the first one to hear it. 

I really have no idea what to make of this. On one hand, it's amazing that she's finally opening up about this, but on the other hand, it makes me question trusting her. I told her I need some time to think about it, and am going to talk to her about it tonight. How would you feel and how would you approach the situation?

Summarize the given text in a few sentences.
<bot>: Girlfriend lied about the amount of people she had slept with for 2 years, turned out to be a lot more then originally stated.