I really feel for you Damekindness, one of our sons relationship broke down a couple of years ago, due to his partner having an affair with one of his friends who she now lives with. My son and girlfriend were very young and rushed into living together and having a baby, against our advice, when they first got together. When they decided to part, he was very low with nowhere to go, we felt we had no alternative than to have him back home for a while. He is without doubt, my most difficult child, he was an awful teenager and we have had to help him financially and emotionally almost constantly. My other one is so easy there's almost no comparison. He gave us many assurances about not impacting on our lives and to be fair he crept out very quietly to go to work before we got up and the same again if he came in late. Having said that he's pretty disorganised and chaotic when it came to having our very young grandchildren stay over a couple of nights during the week, mainly week-ends. We live in a 3 storey house and he managed to leave their bits and pieces all over the place on all 3 floors. If it happened to be a school day for the older one, it was hell, in the end I took over, got her dressed, did hair, breakfast had her ready, we also looked after the baby as he was then so she all my son had to do was drive granddaugher to school a couple of miles away. I think the one of the things that impacted on the peace and tranquility of our household was my son's constant phone use, phone conversations that we could hear all over the house, some of them social, some rows with ex partner. We own a 2 bedroomed flat and as a tenancy was coming to end my son badgered me to let him move in there with a friend, in the end we agreed to that. Almost as soon as he moved in, he started a relationship with his now partner, and spent a handful of nights in the flat in the six months his was there. He now lives with new girlfriend, and I thank God he is much happier with her than with the previous partner, who we have managed to maitain a reasonable relationship with for the sake of the grandchildrenl
I know how you feel being between a rock and a hard place, you need to speak to your partner, I completely understand your reluctance you are not being unreasonable. I hope you manage to sort it out 