Fed up with my so called friend?

Ok, my friend and I have known each other for 2004 and from there we had a really good friendship and at one point even went out together, when it ended we both wanted to remain friends, so it was a mutual thing.

Time has gone on since, he is with someone else now, which is fine by me. I have gotten on with my life and am very happy with the way things are but, up till recently he has been communicating with me and seems to have all but disappeared off the planet. We are Facebook buddies and although I like his stuff, not all of it and I don't comment that often on his page,, he had not liked my page although I have liked his. Thing is its the same thing with Twitter, he has an account and he wanted me to follow him, I did, but he never followed me back.

Recently he has been looking for feeders to be put out so he can get work, I did, but he thanked someone else instead.

He has liked my posts up to a few days ago but there is nothing now. I have a new page to promote my art work but he has been on and has not liked it as I predicted.

I thought we were friends!! I do like to help him when and where I can. He knows this. The last contact I had with him was a few days ago after a two month no contact ( by me) and he wanted to know all about what was happening in my life.

I really do not know if we can sustain being friends when I am the one that has been making the effort.

Any advice?

Genuine question, genuine answers please.

Thank you