I am now not really do tempted for causal sex, as I have been in love and knows how much better sex is when there are feelings involved.

But yes, I've had casual sex. I even had a "friends with benefits" for quite some time when I was around 19. Can't really remember now how it started, I think we met at a party and argued/talked a lot and then we just went home and had sex, and we kept in touch and none of us ever felt anything for the other but we still met up for sex and sometimes we ate out together etc. too, but it was mostly about the sex/physical gratification. I never felt an ounce of love or fall for the guy in any way and I have not thought much about him after we stopped meeting. It was sort of weird as we did share something very intimate with each other, a proof of that is that when he got a girlfriend he suddenly nervously started texting me asking me about his performance in bed, what I'd liked/disliked, whether this or that was normal or not, so forth. I answered his questions as best I could and still didn't really feel anything except glad for him of course, like I would be for any friend/acquaintance who got a boyfriend/gilrfriend. We actually had very good sex together, I think it was because even though we didn't feel anything romantic at all we still opened up and dared try new stuff, and we were on different planets politically (think I am Elizabeth Warren and he is Rand Paul) so we argued/discussed a lot, which created great tension. Have actually thought to myself several times that if he becomes single again I wouldn't mind going back to our old arrangement.