#girlfriend-sharing

A man swaps his girlfriend for her sister and helps introduce the sheltered younger woman to a more liberated lifestyle.

A man shares his girlfriend with his best friend in a threesome arrangement that changes their relationship forever.

A man recounts how he got his girlfriend drunk and horny enough to confess details of a past threesome she had with two guys at a party.

A man's girlfriend surprises him on his birthday by bringing home a prostitute for a threesome, though she's nervous about the arrangement.