How do I get over my dom?

My dom and I have been together for 6 months. In this time we hadn't really talked about being together a ls boyfriend and girlfriend too. He started mentioning that he was not into monogamy. I had mentioned at the start that seeing other people was a hard limit. We came to a point where things were OK but weird because we never had the what's next conversation. Last night, we had the conversation again, and I suggested that he cut me off so that he could do what he desires. He didn't try to keep me or talk to me about it. I'm crushed. For the first time, I felt safe and voluntarily vulnerable. What do I do?
How do I get over my dom?
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