Point out the man ogling your fiancee

You wait for a moment when the man on the far side of Lily isn't looking, then you whisper in her ear, telling her about his stares. She changes a glance, then turns back to face you. She's blushing, which is somewhat uncharacteristic for her, and looks uncomfortable. You had expected her to be excited by the attention.

"What?" you ask, unsure.

"It's just...he looks just like my dad," Lily breathes.

You glance at him yourself.

"Your dad's not bad looking, then," you chuckle.

"Stop, that's not the point," Lily says with a shove.

"What's the point then?"

"I don't want him perving out on me. I don't want my dad thinking of me that way," she hisses.

You pause for the briefest moment before responding, as you take note of the fact that Lily did not say anything about being uncomfortable with herself thinking of her father sexually. You're not sure how much you can safely read into that, but you have to take the chance and try.

"But you don't have to worry about that. This isn't your dad," you point out. "This could be your one chance to fantasize about being with your dad guilt-free. You give him an eyeful, even flirt with him, and your relationship with your real dad will be just as healthy as ever."

Lily looks at you with more than a little disbelief.

"You really think it's okay?" she asks softly.

You nod and put your arm around her reassuringly.

Lily shivers and bites her lip, staring off into space as she mentally prepares herself for something she'd never permitted herself before. When she looks back at you, you can see the excitement finally present in her eyes.

"Alright, let's do this."