Please help

If your partner has a dream that you cheated than going through your iwatch in the kitchen when your bed, and you have never done anything to ruin trust in 9 months of the relationship and always reassured her insecurities from her last relationship that she was in, and then says she wants photos of proof who is who on Snapchat.

I always reassured her through conversation and now she wants proof of photos.

My last two relationships were like this, and I told myself I would never go back to that, so I put a boundary up that I’m not sending proof when I have done nothing wrong, and why can’t you trust me with my words. I have always , most always reassured her own insecurities when she has put them on my because of her ex.

Would you stay with someone? And send photos to help their insecurities from their last relationship?