This is a long one so hopefully someone will make it to the end and offer some advice.
From my early teens onwards I was groomed by a relative. At the time I thought he was feelings towards me were genuine but now as an adult I can see he just wanted to control me. He was very good at it and I truly believed that he was the only person who wanted the best for me.
As I grow up I realised what he was doing and avoided him at all costs. However he was unexpectedly at an event I attended last week. It wasn’t a family event so I hadn’t been expecting him there at all.
Embarrassingly, I got really drunk as a way of coping. I should have just left but I didn’t. I have no recollection of the rest of the night.
However in the morning I received texts from him, I assume I gave him my number? Saying that I had been chucking myself at him all night, trying to kiss him constantly and asking to go home with him 
. I have no idea if it was true. Most of my teenagers years I was besotted with him and probably would have done this after a few drinks, much to my shame.
Do I tell OH about this? I feel so ashamed but am terrified someone else will tell him and he’ll believe I was acting this way.
He doesn’t know anything about the past only that that I don’t talk to this relative.