So what do I do now that he seems to be ignoring me?

It is either he is in a relationship,or that he doesn't think of a serious relationship now.Don't post a picture of you hanging out with another guy,it is childish.Try to see him just like a friend.Get busy with other things.Once in a while forward nice articles to him and leave it at that.Don't send him mails pouring out your heart to him.If he is for you,he will be the one to come for you.