>>45108382>Canonically form deep emotional bond with their trainerSays who? They form bonds like any other Pokemon does. Which is to say you can have that emotional bond, but its not something Gardevoir has alone.
>She is unable to not share his moodWhy can't they just stop sensing their emotions or return their Pokeball when they realize "Oh shit he's masturbating...I'll just give him some privacy."? I feel its a choice for them at that point.
>Line is notorious for adoring their trainerSo this is technically not true, the line just feeds off of their trainer's emotions, if Kirlia's abilities transfer to Gardevoir. They don't adore them, they just protect them.
>Alone with his Gardevoir at nightSo if you felt this Pokemon viewed their relationship as Older Sister younger brother, this Gardevoir would be very respectful and understanding. They would not do anything sexual to their little brother/trainer, that would be wrong. They'd probably sit down and talk with them about what happened.