Can you separate sex and emotion?

The main reason some of my guy friends don’t have casual sex is because they worry about the fallout. Some women claim they can hook up with no emotional attachment but the exact opposite ends up happening. Either the woman was lying to the guy or herself. It’s not impossible to separate sex from emotional attachment, why are some people good at it while others are not?

I think it is hard to predict who you will catch feelings for and it can surprise you. You may have the intention of keeping it casual but it is never really that simple for some. When you say you want something casual, do you believe the other person is really cool with that?

Do you think separating sex and emotional attachment is hard for everyone and we just don’t admit it? What do you do when you wanted casual but feelings start to happen? Do you bail out or confess your feelings?