he sounds fed up/inarticulate/both
you sound a little bit ..cloying
why would you want to stay with someone "for security" and when he
tells you he feels "trapped because he could never leave [you] for the timebeing because he's all [you] have and he knows it would crush [you] and he's afraid [you'll] hurt [yourself] or something"? doesn't that make you feel embarrassed and even a bit guilty?
amaze him and dump him before he dumps you