CaliBoySwag saidIts all a matter of personal preference. Its difficult to generalize and make assumptions based on someone's age. Younger guys can be really mature, and older guys can be really immature. Depends upon your emotional growth, the life experiences, your upbringing, etc.
Cross-generational relationships are not uncommon. Many younger guys dig older guys. and vice versa. men are men. Chemistry is the key.
When you place constraints or draw lines in the sand you screen out someone who might end up being the love of your life. And you never would have known......
This ^ save the part about coming down to Chemistry...that's not enough, at least not for me. You can find chemistry with a 19 year old...trust me. But what you need is an equal in terms of their sense of self. Age is relative to nothing more than life experience, and some 25 year olds have lived a hell of a lot more deeply and responsibly than some 52 year olds, but how they've processed it, how they've evolved from it and how self-actualized they are makes a difference in how "mature" they are (although I have trouble with that word...)
CBS is right re the emotional growth. You have to gauge it on the man, not the calendar. And be frank with him and with yourself. You will face questions that he can't yet fully comprehend because time alone gives us some valuable answers and experiences. But that doesn't have to leave you feeling distanced and alone, so long as you know how to talk to each other about it.
It is possible to find emotionally responsible, open, loving, caring, passionate, masculine, powerful, confident, vulnerable, stable men at any age. Sadly it's easier to find those who have none of that.
After reflecting on what I said above, re time, I think that may be wrong...as time to any man is relative only as regards how much of it is left to live - which none of us know, so celebrate now with anyone who gives you what you truly need as an equal and live with some hope for as much time with him as possible.