Sorry if the descriptions are a bit cheesy, but I had to tone it down a bit, plus trying to describe the sensation was hard.
Obvisouly I'm not going to tell you details about the act itself, I don't want to be banned, but that was great too.
Its about the first time I had tantric sex without realizing it.

Before this incredible night, whenever I had sex, my brain still thought, It would either take mental notes about what felt nice or amuse me with pretty visualizations, or it would go on about my day, who I ran into and what I needed to do later when it wasn't all that good.
This night was different.
Sure it was taking notes at first, but suddenly it just stopped thinking. No "oh yah thats nice" or pretty colors. Instead I felt some invisible force. I couldn't see what it looked like but I felt it's shape.
Then I felt another one, the two forces pushed against each other trying to establish dominance, then they became like 2 snakes intertwining, and coiling on each other. They shifted again and became like two water currents pushing trough and bouncing off each other.
This continued for quite a while, until I felt as if this other force was absorbing my force, suddenly it was like I could control it, and I took my force or energy(whatever you want to call it) and I stopped that. I started playing around with this sensation making it bend to my will, while I couldn't control the other. I even took some of the strange force into and pushed it back out.
When it was over, it was like a disconnect and couldn't feel the other force anymore and my ability to feel it, started to fade away.
The next day I felt odd, usually when I have sex with random strangers, I either feel sorta empty and wonder about them, even though logically it was just a fuck. This time I felt emotionally satisfied.
The next time I had sex I was able to fell the force again, and play around with it. It was a rather good bit of fun.
I pondered what this thing possible is. Prehaps this is what they meant by emotional control, or maybe my imagination is getting the better of me. Either way it fucking rocks, so I don't care.