What happens when a character has two motives? One innocent and the other deceitful? And towards the same person? Or different persons? If a double motive is directed towards one other character, I think this gives the writer a difficulty. Such as, who is this character? The writer will have to explain somehow why their character is ‘double-minded’ or complex or at least make it intriguing or interestingly mysterious.
If, from the same character, an innocent motive is directed towards one other and a deceitful motive is directed towards another, this is easier to write. It may mean that the character loves one and dislikes the other, as simple as that, or was complimented by one and offended by the other and drew a reaction to that.
But the character could only have a motive that is plain and simple evil, whose behavior depends on the situation, is outwardly innocent towards one, and aggressive towards another, but both times wants to hurt the others. Enough of evil. What of good motives? Yes, we need those; integrity.
Setting is very much important to what happens within the above parameters. If the setting is an office, the actions of the characters are more subtle rather than overt, for example. If the setting were a desert, a jungle, a village, and so on, all have different expectations. But if the story is a fantasy, more other worldly things are accepted.