Have I lost him for good?

Hi,
I was with my ex for 3 years and we got engaged last year. He is in the army and I think that he is finding this break up easier to deal with than I am.

Ok so we have been broken up just under two months. We kept going a week without speaking then we spoke again. The longest we haven’t spoke for is 2 weeks and we were meant to see each other a week ago but he cancelled on me last minute, which I thought was very unfair. He keeps blocking me on all social media sites but then unblocking me? It’s all very confusing as to why he is doing this. Last night, I got told that he has been seeing someone else however I don’t know how true that is. I just don’t know what to think or do.

As for the no contact rule, am I too late to do this after we have actually spoke now and again? And will it work or will it just push him away considering I did not do this as soon as we broke up?

I have spoke to his friends, they’ve told me to make myself unavailable to him as I am always there when he wants me. They have told me to just be me and be single yet not telling me exactly what he had said and of course they won’t because there his friends.

I have been told many times that girls go through all the drama of wanting him back at the start but it’s later on in months that the man then realises what a fool he has been.

I have been debating to write on here for a little while but just felt silly but I really just need some help as I feel like I am driving myself insane.

Thank you.