Hi,
Thanks for the replies.
No I don't have a history of cheating on him. I was completely faithful. He however - has cheated multiple times.
So the full context:
We haven't been together in a romantic sense for years. We have been living as co-parenting housemates as his second affair killed it stone dead for me. We've been in seperate bedrooms ever since and no sexual contact whatsoever for the same length of time (4 years). He knows exactly where he stands and I made it clear I do not see him in a romantic way any more. He is free to meet somebody and I figured we would reassess the living situation at such a time.
Now, the reason we still cohabitate is because our DC is disabled and has significant care needs. We also live in the most expensive part of the UK where he wouldn't be able to afford to take on the kind of property he'd need in order to do shared custody (IE two bedrooms, accessible, not in a shit hole flat in a run down area or a HMO)
I figured so long as we were getting along it made sense to maintain the status quo. I made my peace with the end of the relationship a long time ago and felt that whilst he was a shit partner he isn't too bad a friend and always pulled his weight with DC which lightened the load for me.
I never would have thought in a million years he would be snooping through my things.
In the past year I've lost a lot of weight and have started to reclaim something of a life for myself after letting myself go and being in a depression rut for years.
I go to the gym, buy nice clothes, make more of an effort with my appearance, make time for my friends when I can.
All of that has made him incredibly jealous and he thinks I met somebody. I haven't.
My position is though.. even if I did it would be none of his business and he's got a cheek!
That's the full story. I appreciate our situation is somewhat more complex than the OP lays out but I wanted unbiased input to begin with to see whether my gut was right.
Suffice to say I've given him notice to leave but I'm just gutted. I trusted him as my friend and family.