Hi Sara786102937465:
I'm sorry for what you are going through. Everyone has to decide what is best for them. Unfortunately, it takes a lot more than just caring for (even loving someone), to make a relationship healthy. When someone shows you who they are, you have to believe them.
I tell him let's put the phone down and talk in a few minutes when we are both calm but, but he will just non-stop call me and if I don't pick up he turns up to my house, vandalises things, causes disturbance to neighbours. What makes it especially hard is that my family are not aware of my relationship with him as they would not approve given his condition, but I don't know what to do. I care about him so much but at the same time I'm
feeling so trapped. Please help me
Some people end up getting restraining orders in these situations. Jealousy, vandalizing things and causing disturbances to neighbors are scary situations. Although there could be some good times, you'd have to accept that you can't fix him and that the same bad behaviors will reappear.
The jealousy usually leads to controlling behaviors that increases over time and can lead to the termination of most (if not all) relationships in your life, other than with him.
You indicate you can't discuss this with family. It can be helpful to talk to someone about your situation. If you live in the US this domestic violence hotline could be helpful:
www.thehotline.org/ Even if you aren't in the area for phone contact, there is a lot of helpful information at thehotline website.
If you are in another country, you can try Googling to find a resource near you. The behaviors you describe are abusive. It would be a good idea to have a Safety Plan in place for yourself. This location on this website can be helpful with a Safety Plan:
https://bpdfamily.com/pdfs/safety_first.pdfYou might even consider some counseling to help you make some decisions and explore why you might want to stay in the relationship. What are the realistic pros and cons? Might you be a bit co-dependent and want to rescue or fix people.