The guys, who, for various reasons were unable to masturbate or have sex...when they lay eyes on their girlfriends, and wives, their horny gauge hits the MAX!
While being in a small compartment together, your boyfriend gradually gets sexually aroused... Though there may be somebody just over a partition... (CV: Iroha Hanakanzashi)
When you find out your boyfriend was late coming home because he was almost pulled into a soapland, you decide to give him some soapland play at home! (CV: Rei Shirobara)
"Can I blindfold you?" he asks. He rarely makes requests, so this time you'd like to go along with it. And so you accept, and enter a whole new world you never knew of...