<human>: Ok so I'm 22 and ever since I started college I started dating with the condition that's it's always open and not labeled. (Due to bad relationships and a desire to focus on school) I don't have time for real romance because I'm focused on my classes but I still enjoy going on dates and having sex.   
I met this new girl recently, through a mutual friend who invited me over. The three of us hooked up that night and after I spent the night with the new girl. After getting to know her we decided to keep in touch and every so often she comes into town to visit.  Over the past two months I've found myself getting more and more attached, and with that more and more jealous. She's just gotten out of a relationship and is not looking for any type of commitment neither am I. I'm actively reminding myself that I have no right to care about what she does or who else she spends time with. But I still find myself struggling to not worry or stress about it.   
Any tips for managing jealousy? Or should I simply tell her I can't do this anymore? I don't want to miss out on her companionship. I enjoy her company and her personality.

Summarize the given text in a few sentences.
<bot>: In an open relationship getting jealous, how do I manage jealously or do I give up? Exclusive relationship is not an option, she doesn't want to be tied down.