Just FYI, no means no.
Dr. Doe is a mom who also happens to be a sexual health educator. When her daughter made it clear that she wasn't interested and a boy wouldn't take no for an answer, both Dr. Doe and her daughter (off camera) decided they'd had enough. They made it a teachable moment for the overeager boy and all the other teens (regardless of their gender) like him. (Don't worry, she doesn't name him.) And she closes with some really helpful and thoughtful ways people can channel their feelings.
"My daughter has the right to change her mind and the ability to let you know she does." — Dr. Doe
The only way we learn to be better is by learning from our mistakes. I hope he learns from his. It's not wrong to be passionate. It's not wrong to be smitten. It is, however, wrong not to listen to the person whose respect and attention you desire.
There are plenty of other fish in the sea. Fish with thoughts and dreams and opinions. Listen to those fish, communicate with those fish, and some day, kiddo, you'll find one who likes you for you.
In the meantime, you have Dr. Doe's consent to share this with all the teenagers (regardless of gender) in your life who won't take no for an answer.