My first experience with this fantasy back in my 20s came about gradually. We had been fantasizing about threesomes (MFM, mostly) and later sharing, swapping ideas of vague scenarios where it might happen (on vacation? out in a nearby city where nobody knows us? at an adult club?), but funnily enough the trigger ended up being when we were separated by multiple time zones for a period of multiple months.

The built up tension, with the added dash of having independent social lives, meant that there were both more opportunities for something to happen, and those became more tempting as we went longer without a sexual outlet. When it finally happened, there were so many little elements specific to being separated by long distance that made it hotter:

• Hearing the regular text updates about all the flirting that was going on, imagining what it would have been like to witness.
• Time zones add a different element. She would often be out partying while I was still at work, and when she eventually started hooking up, I knew I'd wake up to some incredibly hot updates (if I could sleep).
• She could explore different social dynamics without me being there, allowing her the space to have a true fuck-buddy dynamic.
• Since Facetiming was how we communicated, talking with her while she sent him to the other room, knowing what was going on immediately before and after, drove me for a loop.

Anyone else experience something like this - on either side? What other aspects of this fantasy are enhanced by long distance?