Why is he always too busy to hang out with me?

My current beau, is always busy. OK, I'm NOT one of those naggy-naggy-have-to-see-him-every-hour-of-every-day kind of girls. I'm chill and I HATE nagging. But this is getting a little ridiculous- I haven't seen him in a week and we live really close to each other!

Over the summer we usually hung out three or four nights a week. And since he started this new job (so proud of him) we only hang out on the weekends, if at all. I realize he genuinely has a busy schedule now, but he seems to find time to hang out with his friends.

Do I have a right to be frustrated?