Yes, i've had that situation...

One very drunken night me, my boyfriend & our two friends (boyfriend & girlfriend) ended up letting some dirty man watch us have group sex via webcam.

Yes, both the group sex & webcam thing is unusual for me. lol
Enjoyable at the time as i had my first bi experience but wont be trying again. lol

Oh and on the discussion on age, my boyfriend is almost 17 & im 20. Been together 14 Months.
Age is just a number, not an issue. (and im reffering to relationships not peadophiles)