10. Adam Brody and Rachel Bilson
This is one relationship I will never get over. If I couldn’t be with Adam Brody (who was my first celebrity crush – and still is, to be honest), then at least he was with Rachel Bilson. Their chemistry on The OC was simply undeniable, and they were easily the best couple on the show. The fact that they were dating off-screen sent teenage girls in the early 2000s into a tizzy. We loved it. We lived for it. Until they broke up.
It wasn’t messy. It just sort of happened. And our hearts broke with them. But I would be lying if I said I didn’t secretly hope that one day they would get back together. And I know that they are both happily married and have children now, but I don’t care. Seth and Summer forever.