When my own daugher was 14 yo she told me she'd met this lad she really liked, then said she'd been seeig him for a month already, so I was automatically suspicious that she hadn't told me earlier, with good reason.....she told me he was 18......
My 1st reaction was to absolutely screw over it, but I didn't, I stayed calm and told her that he was 18, she had not had a boyfriend before and he was probably only after one thing, and that was illegal.
After hearing me out, she said she understood my concerns, but it wasn't goig to happen (hmm...ok) but would I at least get to know him before making any judgement, then if I still felt it wasn't right for her then she'd reassess the situation with me
I felt that as she had a more mature approach to this than I did at the time, I at least owed her that, so I agreed, and here we are 3 years later, he's just part of the family, would never hurt a hair on her head and treats her like gold dust, and she came to me well over a year later asking to see a doctor with her, so they were responsible .... I was the mug
Now if I'd tried to ban her from seeing him, I believe I would have pushed them together and she wouldn't have talked to me about things she needed to talk about, who knows? She may have ended up pregnant through being unable to approach me, it could have been very different if I'd followed my instinct to kill him