Sorry but call me a cynical Betty but in November the other woman wants him to go for full custody (no money going out means more for her)
Then your neighbors think they see him and a woman parked in your driveway.
I think you need to change your locks because who knows what they could plant in hour house to get custody of your kids.
His protests ring false, do not put anything pass the ow or his cousin, from what you wrote he wasn't defending you just standing there until his mother stepped in.
So who knows what pressure she placed on him since then
