DD16, has been dating a girl for a few months, all fine with the girl but her best friend doesn't seem to be the best influence, he is known to fight and be not a nice person at times, he smokes weed (as does the gf) albeit not often. DD's attitude has started changing since being friends with him. On Thursday, the gf had covid but DD went out with him and a few of his friends and didn't get home until 11pm, whereas when she's got college the next day we say 9. This boy is older and regularly buys them all cigarettes and alcohol, although I don't think DD has smoked.
Aibu to be concerned about this new friendship?