Advice?

My boyfriend has this female friend, he’s had a few but THIS one is getting on my nerves...

So to start with they’ve been friends since highschool, so I’m trying to just let things go but it’s starting to really get on my nerves how she’s acting towards him...

It’s not anything big but it’s none stop so it’s really annoying me... on Facebook He’ll post something about loving me and how sweet I am and she’ll comment “What about me?” Or “I feel left out!” And then she’ll keep repeating it on like ever comment I or he makes to one another.

Other times she’ll tag him in relationship stuff or the lack there of. She’s single and posts a lot about how lonely she is and how she needs a man... I’m just getting to the point that I feel like this isn’t normal or ok,

What are your guys thoughts?? Is this not normal?? Or am I overthinking it?