<human>: I don't even know what I'm expecting to hear back from this post. If you look back into my post history, you'll see that my ex-bf and I broke up very recently. 

Anyways, I know he's looking for flights for this girl who goes to school in Toronto to come visit him. It's only been a week and a half since we broke up... and he's only met up with her twice in person which was over winter break (I'm sure they've texted and all that)...

We broke up when he broke down and told me that he wasn't happy in our relationship anymore and all this bullshit after I asked him about this girl. I saw a picture of them together on Instagram being super coupley so I just asked who she was (I wasn't accusing him of cheating or anything, just asking) and he broke up with me citing all this other bullshit. 

Now I'm beginning to believe that he left me for her. Yea, we're broken up now. He probably didn't cheat on me physically, but Im sure he did emotionally with this chick and now... it's been 10 days since we've broken up, he's looking for tickets for her to fly from Toronto to where we go to school in Boston. 

I'm feeling really hurt. I know I deserve better. I was a really good girlfriend to him and I don't think that anyone can deny that. I'm feeling really happy about myself since the breakup because I've realized that I didn't really love him - I loved who I used to think he was and who I thought that he could be, but he hasn't been that person in a long time. Still, I can't help but feel cheated on and used. I feel really pissed off at myself for trying to stay with this guy - I seriously wrote 100 reasons why I loved him and hung it from the ceiling and painted a little birdhouse for us and got balloons to replicate that scene from "Up". I'm just mad I wasted so much time and was hoping someone could give me advice to get past my anger at him, but mostly myself.

Provide a brief overview of the text.
<bot>: Is it normal for a guy to move on so quickly and move so fast with this girl after a breakup? Am I being overly sensitive?