My gf [21F] of 2 years wants open relationship. I [21M] am considering it, but worried I will regret it. Any past experiences?

EDIT: hey guys, I think I've read all the comments. Most of you are telling me to end it, but some say to communicate. I appreciate all of your advice. I'm going to talk with her and see where it goes. I'll try to keep her happy while also not destroying my own life.<br><br>I'm not really feeling ready for an open relationship, but I don't know if I can leave her. I'll keep you posted, but for now I'm just going to hang out for a bit. Thanks guys.<br><br><br>EDIT2: It didnt go well, I will be leaving her. See my comment below for details<br><br>I (21M) have been dating my gf (21F) for almost 2 years. Things have gone great so far, but yesterday she told me she wants to explore having an open relationship. I can tell she's been thinking about it for a long time, as she's written a whole (physical) list of all the things she wants to try.<br><br>I'm a bit heartbroken, but I'm also a little intrigued. I can understand her view point, and I trust her. I know she's not going to stop caring for me. I trust her because she's never betrayed my trust, even when we were in a long distance relationship. I believe in her and I know she loves me, but I am worried I will regret allowing her to do this. I'm a very romantic person, and I put a lot of stock into our relationship.<br><br>I've thought about what she wants and I'm comfortable with most of it. I just need to know if anyone else has tried this and is happy with the results. I don't really know how to feel about it, and I would like some advice.