Get a room!

Oy, you two, get a room will ya!
Ok, that's it, I'm officially an old fart.
It's just that I'm not all that sure about advanced foreplay in public.
I did not ask them for their permission, tapping them on the shoulder to ask if they would not mind me taking a photograph did not really cross my mind (my middle name isn't coitus interruptus).
They on the other hand did not ask around for the permission to engage in this disgusting act of public lust.

You were beautiful the two of you. I should have asked for your e-mail to send you this shot, but some moments are best not interrupted.