Oh dear, these things happen, you appear to have behaved honourably but unwisely. You knew it was absurd but your feelings drove you anyway. I would respectfully suggest this was folly but not wickedness, don't dwell on it. For your sake please try to move on, she is an adult but at 23 still wet from her mother's milk, with her whole life before her.

Think back to how you regarded older people when you were 23 - they were part of the background, not part of your life. That is how it is, probably how it must be.

Consider why you were susceptible to this infatuation. Consider if in fact it could be, to use a cruel word, delusional. What led you to it, how can you manage the need that drove you in a constructive way.

Age can be cruel, but there it is.