Wow, I can't get past the part where you told your teenager to do something and she did it! You're obviously doing something right, good job!!!
Good for her to turn around and call the boy that made her evening bearable, and good for Dad for suggesting it! Sounds like you're doing fine.
As for me breaking up with a boyfriend? It's been sooo long since I did that, I can't remember...or I've conveniently forgotten that terribly awkward time in life