I was the one to move out of the house earlier this year. We jointly own it. Her income is not that stable but is enough to cover day to day expenses for her and the kids so to ensure that the house is never under threat I am paying the full mortgage on top of my own rent elsewhere to ensure stability.
I've started seeing someone recently and thought it would be best to inform her so that if she or the kids see us walking together in the area or at the shops this will not be a shock. She refuses to say whether she is dating or not. I am uncomfortable of the idea of her bringing partners round to the house whilst I still pay for the mortgage. I have asked if she is willing to respect this and she refuses to do so. There is little I can do but I am keen to know if I am in the wrong by asking her not to host partners at the house when the kids are out.