I don't know about weird... but why buy the cow when you can get the milk for free?
If you really need a massage hire others and fuck those guys you've met at they gym for free while they charge other guys.
Guys are likely to hookup with other guys they're attracted to, even though hot clients happen they're unusual.
Agreed.
Besides people meeting at the gym? I guess they found each other on Grindr while at the gym.