How do you get away from a possessive ex? He's not violent or outwardly controlling, but I can't get him out of my life at all. He comes over to drop off DCs and before I know it, he's fixing the fence in the back garden, needs the toilet, has made me a new outdoor table after I happened to mention I was going to buy a new one and just needs to grab some tools from the garage to finish it, is putting my washing away if he brings DCs home from school and I'm running late, comes over to collect some random item on my DC free night regularly. I'm in the family home and will be buying him out in the next couple of months, but I'm starting to wonder if I'll ever truly be free of him. Tried boundaries, but they're difficult to implement as he spends some of his time with DCs in my house as he's living with a mate until I buy him out.
I'm not sure how to handle it?