Can someone help me understand this behavior from my girlfriend?

Trentthatrout

Most of the time she is very loving, supportive, fun and so many other things. But then there’s the other 10-15% of the time where she is pushing me away like she has these walls up, she’ll go back to her apartment and ignore my texts/calls. Next thing I know she will tell me she is considering taking a break. I don’t believe she is cheating on me. I know her roommate and am good friends with her as well and will reach out to her to check on my girlfriend during these situations. But I just don’t understand why she will pull me in and then suddenly push me away? Am I doing something? We have an open (to an extent) relationship. We are allowed to bring other people into the bedroom, but the other must be present and approve of said person. It is very rare we actually do that anymore, it was more of a thing early on in the relationship. To give perspective we have been together for 3 years now.

Can someone help me understand this behavior from my girlfriend?
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