I have a friend who is taking advantage of a much older man for his $$$ right now. You sound vulnerable, and you have to be careful in this. Even women I know nearer your own age are out for a financial support, with romantic attachment secondary, just "prostituting" themselves for what they can get. I know this personally from hearing them talk.
I'm not kiddin' here. You don't want to be "used" that way.
This is not suggesting you will never find a love match, but don't be stupid. a 20-something is not going to fall "in love" with you.
Good that you are doing some soul-searching regarding your attachments. You are lonely, and that's understandable. Just don't be desperate.