thrill of watching a new man penetrate your wife

I definitely used to feel this way about watching my GF with new guys but then eventually that excitement starts to wear off a bit. Then I think it transitioned more towards getting excited over the circumstance. Not just a "new" guy fucking my GF but "who" is fucking her or "where" are they fucking her.

This is where playing the bar game, going to an adult theater, etc. adds a little bit of excitement to the experience. I think we find it more exciting when it's unplanned, spur of the moment, at an unexpected time or in an unexpected place.
 
It is a big thrill. New bull new cock, he will fuck my wife leaving his cum inside her, my wife will smell like his perfume or scent, and i will be satsified another bull enjoyed my wife.