Most Helpful Guy
A friend who you have sex with, but with no romantic entanglement.
Someone might choose this if they want to have sex but not all the commitment which comes with a relationship.
People may think that it's safer to have sex with a friend they trust, rather than a stranger.
Often leads to issues with one of the parties getting feelings for the other!1
Most Helpful Girl
Two people who hangout, have sex, cuddle, hold hands, and kiss. It's like an actual relationship but without the commitment and feelings. But one of you is bound to get feelings eventually unless it's just a booty call.1