I know age gap relationships can and do work - but is there such a thing as a gap which is just 'too' big?

I'm in love with a man thirty one years my senior, and if it wasnt for age (although there is also an issue of distance) I would almost definitely have asked him if he wanted to take it one step further by now.

I know I should talk to him about it but I cant seem to bring myself to, probably because Im scared of how he'll react or the possibility of rejection.

I dont even know if I would feel comfortable in this relationship, I havent had much experience whereas he obviously has, but is this a genuine reason against a relationship or am I simply making excuses because I dont want to tell him how I feel?

Any thoughts would be appreciated.

__________________
"When I was 4 years old, they tried to test my IQ.
They showed me this picture of 3 oranges and a
pear. They asked me which one was different and
did not belong. They taught me different was
wrong."
- Ani DiFranco -