My boyfriend gets jealous and very insecure/suicidal?

[J]

I've never done anything in my life or in this relationship to have a reason to not be trusted. He gets very depressed and thinks he isn't good enough.. I had to delete Facebook and Instagram because it made him so jealous.. He hates that he acts the way he does because he doesn't want to be this way. He has very bad depression and I do too, but his rubs off on mine and it's hard to be around him sometimes. We both are on meds. I tell him all the time that he's my world, and I don't want anyone else, and that I love him to death. But he just can't accept that. What do I do?
I love him so much and he's my best friend, but if I have to delete my Facebook and instagram so he's not suicidal because of his jealousy.....?