Following on from a dinner I've just had with a male friend(purely platonic our mums have been best friends since we were born he's like a gross older brother to me) and DP was with us, this isn't some segue into hidden feelings.
He thinks yes. I'm not sure. Especially if you're talking more than once. He thinks that's too black and white and it's perfectly possible to love one person whilst having sex with another.
I left my ex DH as he had an affair. At the time people said I was being too cut and dried but I stand by my decision. I do sometimes wonder if I was being too simplistic though.