I have been with my partner for 4 years and we have a 1.5 year old together.
To put a long story short his parents are heavily involved in our relationship and have been since day 1, although now it's causing major problems. When I fell pregnant we stil lived at home, they suggested they buy a house and we would pay them 'rent'. At first I went with the idea but after seeing their behaviour I felt it wasn't something I wasnt comfortable with so we decided to rent and do it ourselves. We rented a small flat and for the first while it was fine, until we had our little boy it became far too cramped. We found the heating didn't work well and was constantly getting damp as it was an old property. We became pretty miserable in there tbh. His parents then resurfaced with an idea that they could buy a house jointly with my partner, I wasn't keen for this because we had agreed when the time came myself and my partner would buy ourselves. After some discussion they assured me that after a year they would come off the mortgage and I would go on it, I felt a bit funny about it but went ahead nonetheless. Now the whole time since we moved out (May 2014) they really started to show their colours. I thought us moving in together would make them back off but it became worse. Even worse once our son was born. His mother would make comments about our house how it wasn't clean enough constantly. She would clean it and I mean clean the shower, toilets etc if we went our and left her with the baby. This caused friction and on numerous occasions we fell out. Things came to a head when we moved into our new property and we had a big falling out, but it was put right quickly and I felt it had done some good. Anyway as time went on she started to slip back into her old ways. It came to a year since the purchase of the house and thats when I found out the hard way I would be nothing to do with the house ever. This angered me so much because they had lied to me, I also felt stupid I had believed them and not looked into anything and had been so naive. Anyway again this ended in a huge argument between me and his parents to the point I threw them out the house. Their involvement in our relationship has become unbearable. They constantly put things into my partners head and as he has always heavily relied on them throughout his life he still seems to do so now even tho he has been moved out near 2 years. They have stopped us getting joint bank accounts, stopped us from speaking to certain people they see as 'nasty' his mother constantly undermines me in my house takes over the cleaning as if she is a cleaner and undermines my parenting. Now I'm not an ungrateful person but this is crossing a line. They constantly make digs at the house, how we live, what we spend our money on. She will open my partners mail and feel the need to deal with it herself. They have told me I will never stop them seeing their son (I never said that!) this has caused a major issue in our relationship, I can't stand to be around his parents. He won't fall out with them (not what I'm asking anyway) and for our sons sake I need to tolerate them being round. I need him to stand up for himself and tell them to back off but he won't do it. It's going to split us up. It has gotten to the point my family are now involved in this too. Any advice? Thanks.