Can guys get addiction to this?

It all started when I found out that my fiance has a fantasy of giving head to another man. I told him that I was willing to let him explore that, as long as I was there with him. I don't want him to go behind my back and cheat. We had our 1st mmf last week with his best guy friend and while it was fun, it's not something I want to do every day or every week. The problem now is that he has been looking for and talking with multiple male strangers. After the 2nd I told him that I didn't want to do it again because I was so nervous seeing as how it was just a stranger off the Internet. At least with the 1st guy we knew him and I felt comfortable because of that. He ended up arranging a 3rd mmf later that day with another male stranger. The last guy was a bit aggressive and I'm very sore. I told him no more and to delete whatever app he used to contact these men. I feel like I opened Pandora's box by agreeing to the 1st mmf and now he is addicted. How do I get him to stop?

Can guys get addiction to this?
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