Am I messed up for being jealous of my girlfriend’s friend?

So for some reason, I keep thinking my girlfriend is bi. But I know it’s all in my head because she told me she’s straight. However, I think it stems from her not being affectionate towards me. I literally had to stop holding her hand because she got mad at me. It lead me to not ever wanting to try affection towards her until she does so. And she doesn’t even try. She says because it’s her upbringing. And she needs therapy. And I’ve been jealous of her friend because she loves to hangout with her friend so much. She recently became single. And they were each other’s “valentines date.” It made me sad because she took a picture of her and sent to me. She never takes pictures. She only has like a few pictures of me. And she always talks to me about her. And why she loves my girlfriend’s humor.

Am I messed up for being jealous of my girlfriend’s friend?
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