Having second thoughts?

Me and my boyfriend decided to move in together once his lease is up, he's going to move into my place November 1st.. But now I'm starting to have second thoughts.. I'm unsure I even want to be with him anymore. This past month I've been doing a lot of thinking after I had seen some girl message him on Snapchat and her name having hearts by it. He said it was a girl he used to talk to and she was just replying to a story. Me and him aren't even friends on any social media... And if it's a girl he doesn't talk to anymore why does she still have hearts by her name.. we didn't even do anything for my birthday together all I got was a "oh yeah, happy birthday" but he's been hinting at things he wants for 2 months now... He's also compared situations me and him have been in to things with his baby mom.. (like me asking about the girl) .. and things just feel so one sided. He obviously already put a notice in and nov is a week away.. So now I feel kinda like I have no choice but to continue with it because I'd feel bad if he had no where else to go..

Any advice?
Having second thoughts?
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