How long to move on?

Surround yourself with loved ones, family, friends and do what you like to do…whatever interests that may be. Something I wished now looking back, I wish I enjoyed dating more and wasn’t so anxious about settling down and follow this expected timeline I put in my head. Find yourself again and do you girlie!

Time will help. Finding someone new can make you forget the last. Though Concentrating on yourself for a while rather than being part of a couple can be healthy. The stronger you feel going into the next relationship the better it will go.

We have a tendency to romanticize passed and failed relationship. Keep in mind why you left what the cause was and that I have found helps when those good memories comeback and try to change your mind

You say you fell out of love with him. Are you sure what you're feeling is not just a little jealousy that he has a new girl and has moved on himself?

Here comes the 'heartbreak is like a nuclear explosion' speech; there are 3 things to save you from it.
Time, shielding, and distance.

time is the biggest aid. you probably didn't fall out of love - but over time you realized you weren't a good fit.

its like me and my ex gf we nroke up 2020 still miss her but it was my fault

lose yourself in your favorite music

Reach out to him. Ask him how he is if it is still bugging you that much. I have done the same and some times they have moved on, but if you don't find out it will always bug you.