I'm a bit new to the hobby and have stumbled upon the phrase PSE quite a few times. I know exactly what GFE means, but what exactly is PSE. It's always an upgrade. I'm hoping this doesn't mean BBFS, does it? Or does it mean you can film it?

are open to interpretation by providers and hobbyists. Just when you think  you know "exactly" what something means, you'll meet a provider who has a slightly different understanding. I've included a link to the urbandictionary.com for a definition of PSE.  You can also start reading reviews of PS like Ava Devine if you really want to know what a PSE is like.  

as well as a more physical, less lovey-dovey type of experience.  This is especially true of gals who have two tiers of donations marked GFE or PSE.

I'm afraid that there is some evidence that now it is being used to connote BBFS.

The truth is, these definitions tend to wander around, so do make a habit of reading the gal's reviews to really find out what to expect.

PSE, along with GFE, has about as many interpretations as is possible.  And trust me, regardless of what you think, you don't know exactly what GFE means.  

Like you, I hope it doesn't necessarily mean BBFS, although I'm sure some out there will think that.  In general, I think it means that she might be acting like the two of you are doing a porn scene.  It could also, and I think often does, refer to the fact that your provider might have been a 'pornstar' at one time.  Pornstar is a real loose term, as just about every girl, especially the young ones, who has done a porn scene claims to be a 'pornstar'.  So, unless she has some name recognition, I take the label 'pornstar' with a grain of salt.

Filming your date is something to be discussed between the two of you.  Some will allow it, some will not.  Of those who do allow it, there might be an extra fee involved, so be prepared.  However, filming is not restricted to PS dates.

Swim

Ask five guys and gals for the definition, and you will get six answers.

A better way, though not always easy to pull off, is to ask what services she provides.  And honestly, this is best discovered through your own research by looking at her reviews.  No provider likes to be asked, "So when you suck cock, is it with or without a condom?  Are facials okay?"