Rousey, 26, posted an Instagram video of herself with friends, which included their reactions to Punk getting eliminated by Kane during the Royal Rumble.
Besides Rousey, the video includes cameos from UFC superstars Shayna Baszler and Jessamyn Duke, along with Invicta FC standout Kaitlin Young.
During the video, Baszler yells "Yes!" as Punk walks out to the ring during the Royal Rumble.
Rousey, who was sitting next to Baszler, is overheard saying "he's so sexy."
Of course, Sunday night's WWE Royal Rumble wasn't the first time Rousey referred to CM Punk as "sexy."
On Jan. 7, Rousey took to Twitter to express her feelings towards Punk. The star judoka hinted that she might have jinxed him by calling him sexy, since he lost shortly after she made the scandalous comments.
"@CMPunk dammit! the second I said you were sexy you lost... Maybe I should cut that out... #SpeedosAndHoodiesAllDay #OldSchoolRaw," Rousey tweeted.
Rousey is apparently a big fan of Punk's fashion sense, as he walks out to the ring in a hooded sweatshirt and matching speedo.
During the Royal Rumble, CM Punk gave a little nod to the MMA world by sporting a Gracie Jiu Jitsu hoodie during his walkout.
Punk, 35, did not provide an official response to Rousey's tweet about him, and he had no comment on her Instagram video during the Royal Rumble.
Fight fans shouldn't get their hopes up about a potential relationship between Rousey and Punk.
The WWE great is currently in a long-standing relationship with A.J. Lee.