Update:
I met up with him today, we went for coffee and had a wander around the shops. It was strange at first just because it had been so long since I last saw him – over a year, but I think it’s safe to say that my old feelings for him are exactly that; old feelings.
I can confidently say that I won’t be getting back together with him. I don’t know if we will be friends, but there’s no bad feelings on my part.

Hi Anita, thanks for your reply. I wanted to clarify what I meant by I have changed – yes I have matured and realised that I do not need a man in my life to validate me or make me happy.
My ex claims that he has ‘grown up’ and has realised that it is me he wants to be with. I don’t know if he went back to his wife after we split or not. He did have another partner last year until December.
When I say he was ‘the one’ I meant he was the man I wanted to spend the rest of my life with, I can only guess that he means this in the same way when he says it to me.
My confusion is because I don’t know exactly how I feel about this man now. And I don’t know what to do for the best – if I get back with him will it work out? If I stay away will I be happy?
Should I go for it and see what happens?
I just don’t know.