I think I was around 15 at the time, and my older brother took me to see Kentucky Fried Movie...so my first sex scene was "Catholic School Girls In Trouble". Starring Ronda Perry in her most famous role (cut to a scene of her rolling down a hill).

I Spit on Your Grave (1978)

That wasn't sex, that was rape.

Friday the 13th movies..

I still don't distinctly remember the first but thinking about it this probably is my answer too. If I had to guess maybe one of the scenes in Friday the 13th: The Final Chapter. I remember buying a copy of the movie on VHS back in the day (still have it) and watching it late at night because my mom didn't allow me to watch horror films for the longest time and plus I knew there were sex scenes in them.

I think it was Risky Business at the beginning with a nude Rebecca De Mornay. ("Are you ready for me, Ralph?"). Young me watched that scene on VHS over and over and over...

First pornstar was alexis the vell in southern exposure.

It was not a sex scene but the first nudity I saw was at the Drive-in. I was in front of the car in a chair as an 8-year-old watching 1941 and there was a woman that went skinny dipping at the beach and then ended up on the periscope of a submarine.

Very late on answering this, but it's from They Call Me Bruce.

Did Psycho 3 have a sex scene?

I remember there were two naked people with Jeff Fahey and a redhead and my mom got mad that we rented that movie.

I think the kids today will never experience this since there are almost zero movies with nude or sex scenes now that probably appeal to mass audiences and probably would have to watch a indie movie to get that experience.

It quickly ends right when it starts to get going.

I'm certain that the sultry, saxophone-music that plays over the scene was what got your mom extra heated

When it comes to nudity, Dicks have now overtaken boobs. And sex scenes have been reduced down to quick, montage shots. But you're right, Indie/Foreign films are where you have to go to see an entire scene play out.

They want to make movies that will play in China and the Moslem countries.

Also, anyone who wants to see nudity today can see it with a couple of mouse clicks. The thrill is gone.

It is related but not to cinema but the first time I saw risque material was when I was biking around the neighborhood around 1988 or 1989 and went into a empy home that was still under construction with the wood frame and saw somebody hid some Penthouse mags under some plywood.

I visited that house again and the porn troll who Marc Maron mention who dumps porn aound creeks was another experience.

I'm pretty sure mine was in Paul Naschy's Werewolf Shadow.

Either that, or Race With The Devil, (although, apparently that scene was always blurred?) but I think it was the former.

I believe Predator 2 was the first for me.

It didn’t end up being very romantic

Although I mentioned Down And Out In Beverly Hills when this thread was first posted 5 years ago, I now remember being 10 or so and my father put on Eating Raoul During the couch sex scene I covered my eyes because I thought that's what you're supposed to do, and my father reacted like, what are you, a baby?

The Terminator.

The wavy, scrambled picture of HBO late at night.

This is a hard one. Because when I was younger my Mom pre-screened R-rated movies before I watched them for sex and nudity. I pretty much didn't see any sex and nudity as a young kid. In 1986, I did rent Down and Out in Beverly Hills without her permission and there is one pretty graphic sex scene between Dreyfuss and a maid. My Mom saw the R rated VHS laying around, checked it out after I already saw it and was absolutely livid when she saw the sex scene and grounded me for a week. I was only 13. So that was probably it I guess.

Once I got into High School, sex scenes were whatever and she didn't care anymore.

When I was around ten, a friend and I found a box of Penthouse and Playboy magazines in the recycle bin in the supermarket parking lot. This was in the early 1970s, during the short time when those magazines put bare boobs on the covers.

You are a click away from seeing somebody shoot a gun and you still see guns in movies but no nudity.

Now we have gotten soft with all the comic book and CGI animated movies and there is no place for adult but not porn movies with nudity.

A well filmed, well shot & edited love scene with good music is always welcome in my book. They aren't movies, but Zalman King's Red Shoe Diaries had some really erotic, sensual love scenes that weren't gratuitous. But then again, we live in a different time now and after "Me too" so many actors won't do nudity anymore.

Yup, sure did! *Record scratch
What? The show’s only reason for existing was to show erotic love scenes. I’m pretty sure that’s the only reason David Duchuvney was involved as well. I wasn’t complaining then and I’m not complaining now, but come on — it was totally gratuitous nudity.

DD was probably just took the job of being Red Shoe Diaries' Rod Serling for an easy paycheck. RSD came out before The X-Files, and he was just a struggling actor at that point with a handful of credits, the most prominent being Dennis/Denise on a few episodes of Twin Peaks.

Another vote for Terminator. Saw it yesterday and...

...no, wait, I was 11.

Young enough to want to get back to the explosions but old enough to think, well, not so fast...