Is it weird?

Is it weird that he's been crossing my mind like every single day..?
And I think is liking this new girl more than he ever liked me.. I mean he posts on tumblr almost the same things he used to post when he was with me.. He's always posting pictures of her, he never posted any pictures of me, has he embarrassed of me? And he's always posting images of babys and marriages and it just breaks my heart that his thinking about that with her and not with me, cause he used to that with me, we used to picture our lives together.. we broke up over a year and I still get disturb with him being happy with another girl.. I know I should be happy for his happiness but I don't know why I just can't..