If you were 40 and he was 55, I would not be as concerned about the age difference as both of you would have had ample time to experience life and mold your identity.
If I follow what feels right, am I setting myself up for future failure? Usually, we don't question the things we know in our gut to in our best interests.
You are concerned that a 15 year age difference may be a "terrible idea" or "setting yourself up for future failure." Are these irrational concerns, or is this your intuition trying to out-talk your infatuation?
Okay, but consider this: are you drawn to him because he is so settled in his life while you are still putting the pieces of yours together? In my twenties, I dated a man who was eleven years my senior and it was great until I realized I was living vicariously through him.
I wanted to be where he was in his life - accomplished, more confident, and all the other things that come with additional years on the planet.
(No really, I do.) She is young, and her man is 40-something.
I know there are a lot of large age gaps in dating these days - it's totally acceptable. Especially...do you feel about dating women who are a good 12-13 years younger than you?
Since I realize my advice is very one-sided, and I really don't know anything about you or your love interest, I want to offer you a different perspective. Ava Cadell, Love Guru, Therapist, Author, and founder of Loveology University.
Here is what she had to say: "Why are you thinking about problems that don't exist?
I know he's not old enough to really be my father, but he's up there.