This girl keeps liking and commenting on my boyfriend's Facebook and Instagram pictures?

Anonymous
So I have been dating my boyfriend for almost six months now (since September). Almost the whole time we have been dating, she has constantly liked his Instagram pictures except the ones I have been in (surprise, surprise) except a picture of his birthday gift of which she has liked. She has been recently commenting on his Instagram pictures too now. She added him on Facebook last month and now she likes almost every single one of his posts (except the ones I'm in, surprise right?). I know I shouldn't get mad or jealous or whatever but I find it very annoying. I know that he's dating me and not her but again I find it very annoying. I don't want to say anything to him and I don't want to be immature and say anything to her.

I think he may have thought she liked him too because on Christmas Eve he was sitting next to me at my dad's. I saw that she kept snapchatting him and I glanced at his screen and he said that he figured she'd stop talking to him because he told her she was at my house with me. I thought he was cheating at first then her next snapchat said something like "no, no, no, you're my friend!" and he was like oh okay cool. Then they kept snapchatting for a bit.

But what do you think? Do you think this girl may like him even though she said back in December that she didn't? Or am I just being some crazy, insecure girlfriend?
This girl keeps liking and commenting on my boyfriend's Facebook and Instagram pictures?
4 Opinion