My dad acts like he doesn’t care about me anymore.

I’m almost 15. He and my mom were never married, but they split up when I was 3. I lived away from him awhile but now I live close again. He’s married and she has 5 grandkids. (My mom had me late) We don’t go through the court so I never really know when I’ll see him. We were supposed to go boot shopping before my birthday, which is next week, but here it is Sunday way after when he usually calls and he is no where to be found. He is probably with his new grandkids as usual. It was never like this until he got married a couple years ago. I know it’s not her fault, he’s a grown man and she can’t control him. Which makes it even worse to think about. Why do guys do this after getting married? He has done stuff like this before and I’m getting tired of it.