Straightforward: my 29-year-old son is dating a 16-year-old girl he met at a jazz festival this summer. Openly. He had a same age long-term girlfriend until last year, when they broke up amicably. We really loved her, she was basically our daughter-in-law and we’re still in touch. His current girlfriend’s parents know about their relationship & are cool with it. For the record: it’s also legal in our country. We don’t think it’s right though, he’s a grown ass man while she’s a high schooler. He’s also very successful professionally, handsome, takes good care of himself, has a good personality, etc. so it’s not like he’s lacking options. He just says he likes her - that’s his why. He’s not a bad person, I know that, but still this whole situation has changed our perception of him quite a bit. We’re having a rough time to say the least.
Start with asking yourself why this relationship is a problem, but the last one wasn’t. If your son dated that girl for a year she must have been 15 (or younger) when they got together. This in itself is kind of a red flag.
I personally think that this specific age gap (with one partner being in high school and the other in their late 20s) is really problematic. Not due to the difference in years but the difference in maturity.