Invite all three of them back to your apartment

You reluctantly pull out of Daphne and put your swim trunks back on. Lisa and Daphne put their bikinis on.

"Why don't you all come back to my apartment?" you grin. "It'll be more comfortable. I have movies and TV for Lisa to watch, and you two..."

You let your eyes linger on Daphne and Jenny, and the message is clear.

"How far away is your place?" Daphne asks.

"It's a bit of a walk, but not too bad," you reply.

"I have a beach house nearby if we want to go there," Daphne suggests. "There's a Jacuzzi too."

"Oh..." Jenny says. "That sounds nice. I'm up for either, though."