Emma tries to act normal.

"What can I do for you sir?" Emma finally asks, trying not to think about how exposed she is.

The man takes a moment, his eyes finally moving up to meet hers. "I, uh, just wanted to check out a couple of books." He finally says, placing the books on the counter.

Emma moves to sit down in her chair and almost instantly regrets the choice. Glancing down she suddenly realises that her top is rather low cut, not only are her nipples on display through her tank top, but the low cut nature is giving the man an excellent view of her cleavage.

"Now isn't this exciting." You mutter, your words reaching both of them, and you can feel the heat of their mutual excitement.

Emma scans through the first book and looks up momentarily, suddenly seeing the man shifting uncomfortably, a very obvious boner buldging from his jeans. You don't even need to say anything as the sight it seems is enough to send another wave of pleasure through Emma's body and one again one hand drops unconsciously to her lap.

It's maybe a little bit public to try and push the two of them further, maybe just playing with one of them would be better. Although both could be fun.