Since i've been in college i've became friends with a group of people whom I have tons in common with and really enjoy hanging around. Every time I come home and hang with my older friends they tend to get on my nerves for some reason and i cant really have as good of a time with them as i used to.

Should i just tell my old friends that i'm growing apart from them? That would make me feel like a complete as*hole, but i don't know what else to do.

People change over time. Its natural to be different from who you were a couple years ago. Just tell your friends how you feel and they will tell you its ok <3