<human>: My girlfriend and I have been dating 4 months. She met this guy a month before me and definitely liked him but when she asked him out he made excuses and she met me a little later. Every once in a while she messages him and he's not very responsive.

I just saw that she sent him a facebook wall post saying: "Your Look-A-Like!!!!!!! Was watching Honey 2, and had to do a double take when I saw this guy, because he looks just like you!!!! [Link to Randy Wayne"

I feel like I should just take this as friendlyness but I can't help but feeling like she's telling him he's really hot. It makes me jealous, but I'm not sure if I'm really in the right to be feeling this way. I want to bring it up with her but think she'll over-react and be mad that I'm making a big deal out of this.

I should add that a month and a half ago I found out she had told her ex that she was "thinking of him inside her." I forgave it after some long talks because he was 1500 miles away and it was very early in our relationship.

Can you summarize the given text in a few sentences?
<bot>: gf told a guy he looks like a hot actor. I'm jealous but wonder if I'm over-reacting