The motion of the vines didn't appear hostile, and he barely noticed what they were doing as they took his pack and items.  Their touch was delicate and they seemed to be eager to lighten his load.  As they did this he couldn't look away from the plant girl.  He wanted to drown himself in the violet sea of her eyes.  Such was the potency of the perfume that this all seemed totally normal to him.  Being a botanist, he should have known he was under the influence of powerful pheromones- a few minutes in the open air would bring him to his senses.  But he was already drunk with it, and it felt so good to just stand there and breathe in the wonderful scent while basking in her beauty.  And he also felt a growing urge to please her, whatever the cost.