Though Jason Momoa and Amber Heard have an on-screen romance in the DCEU Aquaman film series, there is no evidence to suggest that they are, or ever were, a couple in real life. However, that didn't stop pop culture enthusiasts from theorizing that Amber might have played a part in Jason and Lisa's split.

In July 2021, The Things reported that Jason and Amber were flirty with each other on the set of Aquaman and Aquaman 2, and that Lisa was feeling jealous and insecure. However, Lisa denied this and debunked any rumors that Jason and Amber were romantically involved.