Most Helpful Guy
Most Helpful Girl
Darling you shouldn't worry of who he is now or was when he was with you.
When he was with you, he probably was exactly who he was and he was happy with his life as it was.
As for now. Yes he might be completely different but that doesn't make him different from the one you grew to know. Your memories, your moments and everything you experienced together will stay the same. So if he is changed or changed when he was with you. He is doing it on he's own will and shouldn't question his character. Cheriesh you time together.
It's been a year. He has moved on. Maybe you should too. Let the past be the past, and live in the present.
Regardless of who he is. He is content being whoever he is. Don't read too much into it. It'll just twist your thoughts.