I have very fond memories of my teenage romances, and learned an awful lot about life from them.
Boyfriend No. 1 tried to persuade me to sleep with him when I wasn't anyway near ready, and I learned that it was actually easy to say no.
Boyfriend No.2 was adorable, but became very possessive. I analysed this for weeks, decided I was bored with it, so dumped the poor boy.
Boyfriend No.3 was my first proper, might actually marry him, boyfriend. It lasted for two years, until half way through first year of university. Mutual split, because we'd grown apart, which was very sad, but the right decision.
My parents didn't intervene, other than to support me. Well, Mum did make No.1 and particularly No.2 lots of cups of tea and rounds of toast, when they sat on the doorstep in tears, when I wouldn't get back with them.