Drax: You, Quill, are my friend. This dumb tree is my friend. And this green whore is now my...
Gamora: You must stop!
Drax's statement seems incongruous with reality and his character.
There isn't so much as single kiss in the entire movie, including involving Gamora.
Drax's speech is precise and literal.
Drax isn't generally disrespectful toward women
Gamora resists Peter's advances, saying that she isn't one of the dumb girls he seduces.
While Gamora's attire is not entirely modest, it is not out of the norm either. (Drax himself is half-naked throughout the entire movie.)
At the time he says this, Drax has no motivation to disparage Gamora. His only intention could be honesty.
In jail, Rocket suggests Gamora work out an "exchange" with the guards for a control device, since they find her attractive. Gamora says, "You must be joking."
Why did Drax call Gamora a whore?