The 35-year-old mom of three was thousands of miles away in Florida with her beau watching Floyd Mayweather taking on YouTube star Logan Paul in the ring.
We're not sure how much of the fight Megan and MGK saw because they were seen putting their love on display while in the VIP lounge on Sunday night.
The couple of one year was all tangled up in each other when they thought they were out of public view.
Paparazzi caught the duo being playful in the lounge and snapped away.
In the photos, Megan is seen wrapping her legs around the rapper's waist as he gave her a fun piggyback ride.
Keeping it casual in tight jeans and a plain tank top, the Transformers actress wore a pair of clear heels and held on tight to MGK.
Smiling big while on the musician's back, the brunette bombshell beamed while passing by shutterbugs.
MGK couldn't hide from the paparazzi even if he wanted to.
Grabbing his girlfriend by her upper thighs, the My Ex's Best Friend singer wore a bright red outfit including shiny pants and a tank top.
The couple enjoyed the fight -- despite many viewers thinking it was rigged -- and ended their night at a club.
Fox and MGK were seen laughing and taking pictures with fans inside the Hard Rock Hotel's DAER Nightclub.
While they seemed to be having the night of their life, not the same could be said for Megan's estranged husband.
Only hours prior, Brian Austin Green was photographed looking glum after his car broke down in Los Angeles.
After spending close to two hours attempting to repair his vintage 1980 Jeep CJ5, the former Beverly Hills, 90210 actor reportedly decided to call an Uber to take him home.
Fox filed for divorce Green in November after 10 years of marriage.
The exes share three children together -- sons Journey, 4, Bodhi, 7, and Noah, 8.