Do you trust him?
I had the same problem after I told Ex I was leaving. Anonymous letters arrived addressed to me at work but because we have a no secrets policy they were opened and so the details were public knowledge. Both letters were different, about slightly different subjects but one was about my new partner and along the same lines as yours seem to be. I found them recently and have no doubt they came from the same source – although typed the envelopes were handwritten and the writing is just too similar.
I don’t know what you should do. I trusted my NP but then I had known him for a long time(as a friend). I showed him the letters and he was understandably annoyed and hurt. Then we thought, why should we let it bother us, us being happy was more important. So that’s what we did.
Hope you get it sorted.
it strikes me that someone knows your weak spot and is playing out an elaborate mind game. I remember moths ago how you agonized as to whether it was too soon to take up with a new man. The new man who was everything the old one wasn't.
Someone is deliberately putting a spanner in your works. So how to react?
If it were me, I would show the letter to the new partner. Then gauge his reaction. Tough one, as you might not like his reaction. But if that is the case, does that imply substance to the allegations?
If he is suitably upset and open and honest with you, you may have taken a step further to justifying your trust in him. He is still a decent man.
I know you have a huge trust issue, so I can see it is tearing you apart. And the ex is being a git too. Just don't need it.
But for me, just show him the letter and ask what his thoughts are.
Easy for me to say, very hard for you to do. Good luck.
Now that the seed of doubt has been planted I would think that a lot of people would need answers. Only you know if you are one of them. Maybe not today, tomorrow but at some point in the future.
Playing devils advocate now, if you keep this information to yourself then you are in fact deceiving him !!!!! Can you live with that ?
It may be something or it may be nothing.... You would have to be prepared for any kind of worst case scenario answer ? On the other hand his reassurance could cement your relationship further..
I would suggest that if you decide to raise the issue, read some of these pointers so as not to inflame the situation further. A calm and considered sit down approach would be far better than the blurting out, red in face, hands around his throat approach..