Dream of having sex

Dreamt of my husband having sex with a call girl which turned out to be an old school friend. I waited in the garden of our home while she came round, hearing them, it felt like i was outside for hours! Then he appeared in front of me with a grin on his face and i asked if she'd left? he said" yes" I asked where, he said " our bed, where else" I replied how could you in our bed and he replied "well we need a new matteress"! he showed no remorse no regret, it was almost like he was saying i need this!