So my boyfriend text this girl he says he was friends with years ago. We have been together 5 and a half years and I havent heard about her before, but thats whatever. So he texts her looking some weed, which she sells him. They continue to talk, she comments on a lot of his shared posts on facebook and likes loads of his status etc. So I started thinking this was kinda weird, like where did this girl even come from? So I ask him if hes still talking to her and he says no, I then ask him if he can show me his messages to her to which he opens up his messenger and all trace of their messages have been deleted.

It may just be the hormones or my own insecurities, but does this sound weird to anyone else?