I went through a period of about 18 months where I was on the verge of leaving DH. No one reason, I was just kind of ... over it... I thought we were mismatched (I still do TBH), I was bored, tired of drama... just over it.
I think the lack of a single clear reason though kind of kept me there, and one day the fog lifted. I would love to say I worked it all out but that wouldn't be honest.. I don't know what happened. We just got through. I know he's gone through similar stages. I wonder if sometimes it might just be one of those things.

Sorry, that's really blithery & not making much sense...big hugs, I hope you work it out & reach what's best for you