Nick Diaz isn't letting his domestic violence case get in the way of meeting new women -- the UFC star was out in Vegas this weekend getting hot and heavy with a new lady ... TMZ Sports has learned.
Diaz hit up XS nightclub at the Wynn Hotel on Saturday night -- where our sources spotted Nick kissing a new mystery lady right in front of everybody!!
Unclear if they're dating or if they were just having a fun night.
We're told this is NOT the woman who accused Diaz of domestic violence last weekend.