So today, Valentine's Day of all days, I discovered that DP of 6 years has a collection of knickers in his boxers drawer. He has about 12 pairs - mostly hipsters, boyshorts and briefs. I brought it up with him and he seemed embarrassed and said he likes the feel of the material more than men's cotton boxers.
I had another look later on when he was getting ready for our meal out and they're all 14-16 which seems about his size. But I've also never washed them and still wash multiple boxers every week.
I've never come across this with any of my previous partners and my mind is racing. We had a lovely meal out but it was clear he didn't want to talk about it.
I don't think they're another woman's because why would he have so many if they'd been left after a sneaky visit while I was away?
Am I being unreasonable to think this is not normal? Is it a red flag? I have so many questions but he's not telling me anything other than they're his and he likes wearing them.