Read a text convo on dp's phone to a female friend of his who I don't really know - she'd sent him an innocent enough message and he replied that he'd had a dream about her recently. She asked what had happened and he didn't go into details but pretty obviously hinted that it had been a sexy dream. I was shocked and a bit upset. I know he can't help what he dreams about but why would he tell her? I told him it was creepy and really inappropriate but he says he just thought it was funny and doesn't understand why i'm upset.
Am I being silly or is this really out of order?
I don't normally worry or feel the need to check up on him - he asked me to check his phone looking for something else which is how i saw it.