I used the duct tape example. Rub a strip of duct tape on the forearm and describe how sexual intimacy is intended to bind you to someone. And when that bond is broken (rip off tape) it hurts! And when you try again with someone else (re-apply tape here), the bond isn’t so strong anymore (pull off the tape). Pretty soon, there is nothing about it that sticks much anymore.
excellent, and the example applies regardless of your gender.
Some would suggest using new tape.