<human>: I've (23M) been dating my GF (25W) for about 7 months and it's the best relationship I've ever had. It's like I'm dating my best friend and dream girl. Problem is the last couple weeks I've been having irrationally jealous feelings about past hookups and simple things like close guy friends that she mentions and guys in public trying to flirt with her all the time.

I immediately identify the feelings as needless, self destructive, and irrational because I completely trust her, but I can't make them stop. I've hooked up with other people and have close girl friends but cannot seem to put myself in her shoes and let it go. The last thing I want is to jeopardize the relationship because of these feelings. I think about it all the time and it's affecting my work and lifestyle. I did not used to feel this way in the slightest and now I feel like it is taking a heavy toll on my health and our relationship.

I almost feel as if these feelings are rooted in not feeling good enough for her. I feel as though she could have her pick of any guy and I don't know why she's settling. I'm worried constantly about needing to prove myself and that she could any day now find a guy and be gone in a second.

Has anyone felt similarly or dealt with feelings like this? I feel immature and irrational and need to make progress in this regard.

Can you condense the text into three sentences or less?
<bot>: I get jealous over old meaningless hookup stuff and flirting about a girl I'm in love with and I need to get over those feelings before they take a tole on the relationship.