<human>: Basically, she left her boyfriend for me. After the breakup she was fairly devastated for a couple of days and thought that she might need a few weeks before we could start dating, but two days after that it was as if we couldn't help it and yeah ...we make out, and it's fantastic. And we talk about introducing to parents and stuff like that, relationship-stuff. And when we were on the train home I have my arm around her and her head is on my chest, it's obviously affectionate and we part with a kiss. 

I should mention that there is a lot more that has happened (in the past 8 weeks or so that we've been hanging out regularly) but if there are any questions I can elaborate. I know it sounds like I'm just a classic rebound but I don't think so ...we're really open with each other and she's reassured me that she doesn't want me to be a rebound and it's not that kind of situation. She came to a realization that she might not have needed as much time as she thought she did.

Give me the gist of the text in a nutshell
<bot>: So we're dating right? I think I can't believe it 'cause it seems too good to be true. Any advice on not fucking this up?