I'm having a conflict: I'm afraid to break up with my boyfriend
Do you want to break up with him? If so, what are you afraid of?
If I break up with him I won't have any one to take care of me.
If you want to break up with someone you should not stay in the relationship. As an adult you should be able to care for your self and not rely on others.
The thing is, he's much older than me -- and quite prosperous.
That's not fair to him, and it's unfair to you if that's the only reason you're with him. It's unhealthy to stay with someone you're not suited for.