[Ziusudra]

Congratulation on finally being clean and sober!
I am sure that it was not an easy journey to finally grow up.

The other person who kept the distance from you obviously has enough self respect and self love to avoid any romantic entanglement with someone(i.e.you) who was self destructive with addiction and w/o self love.

When you stop being self destructive and when you finally treasure yourself with self love, you will be able to genuinely love someone else as well.

How do you move on?
Be aware of yourself. Then learn to love yourself, treasure yourself, and heal yourself.

Kudos to you for moving towards the right direction.