<human>: I met him shortly after summer ended and we had both just gotten out of long-term relationships. He dated his ex for about a year and a half, I was with my ex for nearly five years. For the first few months we were flirty and friendly, I always joked that I could help him out and be his "wing-woman", etc...

We hooked up recently though and have basically been attached at the hip ever since. It's been about a month and we are keeping things casualish, just kind of seeing where things go. We're exclusive but don't feel the need to label anything as of right now, especially given the fact that we both just got out of relationships fairly recently.

All of his actions seem to indicate that he's into me. He texts me often, calls me to talk during smoke breaks at work, doesn't mind if we have sex or not, he's talked about me to his mom and older sister, and he's drunkenly babbled about wanting to take me on a date/how his feeling for me "kind of freak him out". 

BUT he still occasionally talks to his ex, and I'm worried that he may not be as over her as I am my boyfriend. He's admitted that he still cares about her, but knows they aren't good together. I don't want to end up realizing that he's just using me to fill in the gap she left, y'know? 

I guess I just want to know what I should do right now? I don't want to put labels on it because even I don't want to jump into something super serious right now, but I guess I just want some reassurance that I'm not a rebound girl. And if it seems that way, is there something I can do to prevent it? I've told him the entire time that I want to give him space to figure his shit out and don't want any pressure on this weird relationship of ours.

And, lastly, I really fucking like him. I really fucking want to see where this goes. aI wish the timing weren't so shitty, but do you think we still have a chance at pursuing something more??

Can you summarize the given text in a few sentences?
<bot>: Rebound girl or no? If yes, how to remedy? If no, still what the fuck am I doing?!