Use alcohol as a bargaining tool to start the threesome.

From Create Your Own Story

Hoping Matt will play along, you say, "Sure, if you give us something first."

Kara clearly gets the drift, but she lowers her voice to a sultry murmur and asks, "What do you want?"

You figure it would be best to start things light, but suggestive enough.

• Tell her to take off her shorts and tank-top.
• Tell her to get in your laps.
• Tell her to give you each a kiss.