Does she like him?
Most Helpful Girl
Definitely a red flag. I personally don't use FB to make it known that I like a guy. I won't tag a guy in funny posts because I like him. I usually only have crushes on people I'm friends with, so I only tag people I'm friends or family with in funny posts.
With the photos thing, I like everyone photos regardless of if they are shirtless or not. I kind of just go through my newsfeed and just like any and everything. Sometimes I see it's a picture and I just like it even if I don't really look at the picture. I wouldn't use the liking of photos to mean something unless she deliberately goes back through his old pictures and likes ones that were from like, 2011 or something.
This definitely seems a little suspicious. Just because your girlfriend may have a crush, doesn't make it harmless and doesn't make it alright. Having a crush is fine even when you're in a relationship (even though you should definitely avoid one), but acting on it isn't. Even if your girlfriend isn't acting on it physically, she is definitely trying to catch his attention and that is just as dangerous. I would have a chat with her about this if it makes you uncomfortable.0