<human>: I am 18 and my girlfriend of a few months is 17. I have been in a long term relationship that lasted over a year. This doesn't matter as much, besides the fact that I'm sure my view point is immature, and I want to fix it. 

Hell, I don't even know if this applies to my current girlfriend because as far as I know, she is a virgin with no experience in anything. But this is for future reference in case I meet another girl this applies to or find out something about my current girlfriend(she has the right to with hold personal things like that).

I know I am sure this has been asked before, but I have a much different case. I'm talking about feeling jealous of things like a girl having previous sexual relations with a former partner or just a guy. This has always bothered me a lot. I don't know why. Just thinking that the girl has done this or done that(while not in a long term relationship) would give me a feeling of jealousy. 

People I have talked to have understood and said "it's like you wish she was only yours and was always only yours". I want to fix that because I realize this is incredibly immature(and hypocritical because I'm not a virgin myself while my current girlfriend is). 

Please do not bash me and tell me how immature that view point is. I know that. I want to change it. Not only because it's immature, but because it bothers the hell out of me and tortures me and causes me to over think. Especially if I find out from other people other than my girlfriend.(spiteful ex-boyfriend of hers or a pissed off ex-girlfriend of mine who wants to stir things up)

I'm sure many of us have been there where we were told something true about a significant other that we did not like. I want to change how this information impacts me.

Can you provide a brief overview of the text?
<bot>: I get jealous even knowing that a girlfriend has done anything sexual with a guy other than me, prior to meeting/dating me. I want to fix it because it's immature.