My (m35) open marriage gets away from me [cuckolds perspective]

A few years ago I convinced my wife that we should start an open marriage as things got a bit stale and we both loved to check out others. she wasn't sure but I eventually got her to give it a trial on a weekend away. Unfortunately I as a 30 year old male with a dad bod and she was a 30 year old MILF who was realizing how desirable she was.

We got on tinder in another town and I spent a whole day with no likes while I heard her phone beeping non-stop. she just sat there smiling to herself as she chatted with all these dudes who wanted to take her out. she settled on one who was a personal trainer and agreed to meet him for a drink pretty late at night. She asked if i was sure and i said yeah of course and pretended that i had was meeting someone else as well so i went out and had dinner by myself.

I got back to the hotel at 11pm and could hear sex noises from the hallway and then i realised they were coming from my room. i ran to my door and opened it and then heard my wife just say 'dont come in' and then some dude walked to the bedroom door, stared at me with a smile and shut it.

I spent the next hour sitting in the main room with my ear to the door listing to her make noises id never heard before while he kept whispering to her that she was such a sexy slutty bitch and she would laugh and say yes yes yes give it all to me.

at 2am the door opens and he walks out with a smile on his face and tells me thanks. in the bedroom my wife is naked and upside down on the bed with sheets and pillows all over the room. she gets me to lie down with her and i can feel his sweat on her body and she says 'thank you so much baby, I needed this so much' as i just think about how she'll never be just mine ever again.