Boyfriend issues😪

Posting anonymously becusse I don’t want bashed. There’s a lot more to this, but this is really stressing me out. I leave go vacation Monday and I don’t know if I trust this girl. It isn’t the rachel girl messaging me, it’s her friend Megan.. I’ve talked to his mom and she told me not to worry about it becusse I haven’t stayed anywhere for her to be here recently. I’m really upset and just need some advice.. please no bashing. I can’t take anymore