How can I get this girl?

So I really like this girl. I've heard that she asked 2 people to finger her a couple days before and she's more wild then I remember. So hoping to get some action, I asked her to come over. My friend told me that she'd never give me any action if he weren't there. And he was one of the people who fingered her. So, she came over. We were having so much fun. But, then my mom started bitching at me about respect and other ****. After, I go back to my room to find the two under my blankets. I have no clue what went on but my friend said they just talked and snuggled. I was so pissed. How can I win her over? Oh, you might need to know this. I've dated her before. She broke up with me because the guys on my football teamed pressured me and her to do things we didn't want to do yet. Also, I was a little immature. But I've matured and she knows that. What do I do to get her back?