Obsessed With My Ex Husband And His Wife

I saw on Facebook that my ex husband and his wife were going away on a vacation and even said what hotel they were staying at. I decided to go on a solo vacation myself and just so "happened" to stay at the same hotel they also booked. I may have also rented a car(so they can't tell I'm here too). Let's just say my room is very near thiers. I have been thinking the whole time what they have been doing in their room this whole time. Is it pathetic that I did this and that it turns me on a lot? Like so much so that I have masturbated to the thought of them together. Knowing they and it seems like almost everyone else are with other people. But I am alone. The girl who checked me in even looked at me weird for checking in alone. It almost feels like she knows why I am here. Since I was sitting in the lobby in a corner acting like I was on the phone. Then checked in right after them.