Lindsey Pelas On J.J. Watt -- 'What Happens In the DMs Stays In the DMs'

Remember when smokin' hot model Lindsey Pelas invited J.J. Watt to "slide into my DMs?"

Well, when we saw Lindsey at the First Slice Media party over the weekend, she was certainly suggesting he took her up on the offer.

Check out the clip ... we also asked if there were any OTHER big athletes she's got a crush on -- but it's clear, it's J.J. or bust for Pelas.