Nothing; continue with the group

Zack decided that leaving the lake now would be too suspicious. The group of friends had a genuinely great time fooling around at the pool. Time well spent passed quickly, and soon the sun was dipping low and their stomachs were empty.

"I'm hungry. I'll go back and start preparing dinner," Heather said first.
"I'll help!" Victoria offered.

With the two girls gone, the rest of the group began to return to the cabin as well. Brandon and Ashley were all over each other, making Zack feel slightly jealous.

Back in the room, Zack and Lisa waited while Hannah showered first. There was an awkward silence between the two exes. Staying in the same room evoked very intimate memories.

"Still pining for Victoria, I see," Lisa couldn't help herself from commenting.

"That's the plan."

"Good luck." Lisa said after a long pause. "Anyway, I wonder what Heather is cooking up."

Zack grunted in response. Ever since breaking up with Lisa, he had felt guilty about the whole relationship. He was never really serious about it, and that had hurt a friend in the end.

After Hannah was Lisa's turn. Zack passed the time playing a game on his phone until Lisa emerged from the bathroom, hair wet and face flushed from the hot water. The sight made his cock twitch. She nudged her head towards the bathroom.