Spit versus swallow.

It's just good folks having nice clean (for certain values of clean....) fun.

then every girlfriend I ever had was a porn star.

Isn't there already a line there?

The lines to PSE is wherever I want to write with my pen that isn't in the bag.

If you see a line there, it might mean I've already been there LOL

girlfriend EXPERIENCE and pornstar EXPERIENCE, not with real girlfriends or real pornstars.

maybe a little bit.

Most of the porn stars I see on screen are doing anal with the absence of a condom.  

You've visited his taint?

that makes a difference to me.

Like this: GFE | PSE

GFE and PSE are representations of what an actual girlfriend or a porn star might do. Since the definitions of either are so subjective and highly contested, I'd rather not speculate on how others define them. As someone who offers GFE and PSE, I think of PSE as including GFE with additional activities that make for a more high-intensity experience. This may include face fucking, deep throat, gagging, lots of sloppiness, cum on my face or in my mouth, dirty talk, fisting, rimming, and Greek. For me, it's also a style of engaging in these types of play.

I actually did LOL when I read it.  

It was the only concrete answer I could think of. Lol