Justin Bieber and Selena Gomez got hot and sweaty for a few hours Friday afternoon in Texas ... and they even had someone watch -- but it wasn't the cuckold you're imagining.J.B. and Selena hit up Action Dance Studio in McAllen, TX yesterday after their coffee date ... spending 2 hours in a private rehearsal space with a choreographer.The door was covered with a plastic mat during the sesh ... and security stood guard. The owner says the couple seemed "really close and into each other."What we don't know ... why there were in a dance studio. BTW ... the rich really do get richer ... they didn't pay the studio a dime.
