The Aquaman actress testified their first on-set kiss "didn't feel like a normal scene", and later recounted a flirtatious moment she shared with Depp in his trailer.
Heard admitted she quickly bonded with Depp over their unique tastes in books and poetry while filming The Rum Diaries, but she also recalled a moment that stood out as a distinct shift in their relationship.
"We had a kissing scene. It didn't feel like a normal...it didn't feel like a normal scene," she told the court of their first kiss. "It felt more real."
Heard went on to explain there are common things actors do to be more professional and make their costars feel comfortable in these moments, such as not using their tongue during kissing scenes if it can be avoided.
"There are certain things you can do to maintain a certain line, and it just felt like those lines were blurred," she continued. "He grabbed my face and pulled me into him and really kissed me."
When Heard was asked if the Pirates of the Caribbean actor used his tongue during that particular on-set kiss, she said that he did.
Heard also recounted a particularly charged moment that began when the All the Boys Love Mandy Lane actress went to Depp's trailer between scenes to drop off a bottle of bargain wine she bought for him. She explained she was wearing a bathrobe at the time because she was wearing '50s style undergarments underneath it for their current scene.
"At some point, I'm going back to set, and he kind of kicked his foot up in the air and he basically kind of lifted the back of my bathrobe up," she stated. "And I kind of turned around and like laughed...like giggled."
She continued, "He kind of playfully pushed me down on this bed-sofa that was in his trailer, just playful and flirtatious, and he said 'yum' and he kind of lifted up his eyebrows," she added, mimicking the facial expression.
Heard also clarified that she was in a romantic relationship at the time, and it was her understanding that Depp was as well.