This is my first time on a forum, so hopefully someone can help me out.
My girlfriend of nearly a year dumped me at the beginning of the summer, after she found out that i was texting another girl i met down the shore (I never actually did anything with the other girl). Our relationship was great, so obviously she was extremely hurt when she found out the news. I did everything i could to say i was sorry and try to get her to forgive me. I wrote her, her parents and her older brother an appology letter saying how sorry i was and how I'm really not a bad kid at heart. Eventually she asked me for space, so i had no other choice but to give it to her. About a week after our breakup she started hanging out with another guy and has been "together" with him throughout the summer. To my luck, the kid and i work at the same place -___-. Anyway, the kid she's been hanging with smokes cigarettes and weed, and i found out that my ex has been smoking weed with him, something she totally despised while we were dating. She's told me that she's become a stronger person since our breakup and has been having a lot of fun. But i don't see how you can be saying ur stronger and at the same time be getting high, something she used to hate. I also found out recently that she hooked up with this kid down the shore while she was drunk at prom weekend, while we were still dating. Lastly, i sent her a homemade birthday card (something we would make for eachother on holidays and anniversarys and stuff). This was a few weeks after our breakup and i got a text the next day from her thanking me for the card and asking me if we can get together before we go away to college.
At the beginning of our breakup i wanted her back so bad and would do anything to have her, but now after hearing how much she's changed and doing things she would've never done before our breakup, i almost don't know if i want to see her before i move away to college. Of course i still love her so it's becoming a more and more difficult decision to make. So i guess my main question is why is my ex acting like this and having such self destructive behavior after our breakup? She's gone from being this quiet, innocent and loving girl into this almost polar opposite person. I really do love her and I'm starting to get worried about her. If anyone has any idea whats going on please help!