Ps no we don’t think your insane but you will feel like your going mad living with a person doing these things. The best thing I’ve found to stop myself going or feeling insane is to work on myself. If you can do some exercise make yourself feel better, if you can afford get your hair done or just buy a cheap dye cut a new style yourself , go get your nails done or buy cheap gel nails set online. Take some care of yourself, maybe he will notice or maybe he won’t but that will make you feel even stronger realising your are worth it and you don’t have to spend all of your time worrying about what he’s doing because you have your own life and you are important too. Make sure you have some people around you that you can have a coffee with or a chat about anything else. Do you have a job, if not might be worth applying for one even if only couple hours a week so you can get out there a bit and do your own thing .