There is something exciting about this. Peter still doesn't want to have sex...

There is something exciting about this. Peter still doesn't want to have sex with Mizzy, but there is something thrilling about downing a shot of vodka with another man who happens to be naked. There's the covert brotherliness of it, a locker-room aspect, the low, masculine, eroticized love-hum that's not so much about the flesh as it is about the commonality. You, Peter, as devoted as you are to your wife, as completely as you understand her very real worries on Mizzy's behalf, also understand Mizzy's desire to make his own way, to avoid that maelstrom of womanly ardor, that distinctly feminine sense that you will be healed, whether you want to be or not.
Men are united in their commonness, maybe it's as simple as that.