is it a test or an opportunity to walk away?

Hi guys. I would love some advice.

I've been dating this guy for about a year and a half. Lots of problems in the relationship of him just not treating me right. It was lots of back and forth between my true desire of him always being this amazing guy and us living a great life other and then being triggered by the 3d.

This past month, I was stable. I wasn't triggered by the 3d. Some intrusive thoughts, but I was able to put them to rest. For the first time, I completely trusted him. I had never been more in love and happy in our relationship. i thought wow. I was consistent and it paid off. imagination is the only truth, and i created this. I'm so grateful. thank you god.

then, i find out he cheated on me a few days ago. i thought it was an opportunity to say no to the 3d, so i did. yesterday, i found that he's actually been cheating on me almost the entire relationship.

i used to ask myself what i really wanted to regroup my focus. Before it was my happy luxurious life with him, my loyal and loving husband. Now that feels gross. Now when I think what do i really want? Happiness and freedom. There is no scene with it. Just happiness and freedom.

Do i say no to the 3d or leave this chapter behind?