So it isn't really an issue as it is just a crush but do you think a 20ish year age gap is too much?
I am quite old fashioned and the age gap doesn't bother me but I think it is because it is him rather than liking older men in general. He really is lovely - quiet and sensible and you never hear anyone say anything bad about him.
I don't know if the age gap would make him less likely to notice me. 