by duoglide
The door just happened to be open, and Mark & Laura just happened to be walking around the house naked? As if. Those two are obviously eager to get together with Colin & Jen, probably after Laura spotted him having a crafty wank by the pool. If fact, she most likely wore her swimsuit slightly off-centre to give him a peek, just like Jen didn't give two hoots that her friends were warching her get fucked. This cries out for a follow-up: maybe Jen & Colin get to watch Mark & Laura fuck, maybe they all watch each other, maybe they switch partners...