Yes, actually, I'm 22 and I saw it also. I had no intention of seeing it until it came out on video, but anyway...I thought it was okay. Britney Spears' character wasn't anything that needed a lot of true acting experience, but I thought she cried pretty well. The guy in the movie was very good looking, but too much older to be playing her love interest (...wasn't be supposed to be in college or just out of it?). Even though the movie was PG-13, Britney Spears' core audience is young girls who will want to see this movie and it just isn't appropriate for them. I mean, come on: running away from home, performing in a bar cuz you ran out of money, rape, miscarriage, drinking, an unfaithful fiancee...these just aren't topics for kids.
Also, and this is kinda silly but, it drives me crazy when they do movies with highway driving and the people in the movie are the only car on the road. Get Real!