> I guess the real issue is, how do I not be so jealous!?!?
Your jealousy comes from fear. What do you fear? Do you fear her going away?
In order to deal with this you have to open up to be vulnerable, tell her you care very much about her (don't use the L word unless you mean it) and tell her your fears, that you fear her going away. As soon as you start to feel jealous, start thinking about all the positive things about her, and about all the times something went right. Then talk to her right away, tell her you are feeling insecure and you need her reassurance.
You need to do this 5-10x or more, don't give up, because she may not really understand how much you need her when you have a "fear attack", or "anxiety attack". This takes practice, people are not perfect, be patient with her. But you have to be vulnerable and open with her in order for you to learn to trust her.
Source: been there done that with something very similar. My issues didn't exhibit as jealousy because I internalized it more, but I was terrified of something I later learned was intimacy. And at the same time I was terrified of not having intimacy.
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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