Is it normal for a man whose already in a relationship to be liking another girls pics?

Puppystarfish23
I not sure if this guy at work is really friendly or he just really likes me.

He seems to get along with a lot of people at work but really the only girl he talks to at work besides his girlfriend which makes me feel a little awkward at times given he looks happier talking to me than her.

I also have a boyfriend myself who I love very much. This guy only likes posts were it's not about my boyfriend and is also always first too as well. My friends have also noticed and told me lace a trap for him.

Today is me and my boyfriends 3 year anniversary and I made a post about it on Facebook he didn't like it but as soon as I changed my profile picture to me looking really pretty by myself he instantly liked it.

I'm very flattered as he's very good looking but I have a boyfriend who I'm ready to settle down with and love so much. He should feel the same about his girl. Plus I'm 4 years older than him he needs to grow up abit
Is it normal for a man whose already in a relationship to be liking another girls pics?
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