How do actors cope with sex scenes?

[palomapear]

I heard good things about the TV series Outlander. But the sex scenes are making me uncomfortable. I'm a few episodes in and the main female characters has already had about 4 attempted rapes. It's not nice. I'm not going to watch any more.
But it made me wonder how the actors cope?
I understand that in more 'romantic' sex scenes there is a crew so it's quite business like. But you are still half naked in a room full of strangers- it's a weird thing to do for work. Either getting your boobs kissed by a stranger or vice versa.
And the use of rape as part of the plot - I wouldn't want to pretend to be a rapist.
I love films and TV but I can't imagine saying to my DH over dinner 'what did you do at work?'
' I pretended I was a rapist. You?'
' I got my boobs out to so Brian could kiss them. '

I don't think of myself as a prude, I'm probably over thinking things but it spoiled the programme. Even without sex scenes I wouldn't want to act for a job.

I've always wondered this

I always think they are too much and unrealistic. Why is it many of the Male co stars seem to want work out what their female co star had for breakfast... it never even looks remotely like it would be enjoyable for either of them

If I was an actor theres alot of scenes I think I would have been dreading having to film...