office friends who never talk to you, playfull and like motorbikes, it's a wanderer

One day you come home from work and are walking alone, when suddenly a black motorbike stops

"come on I'll take you."

he offers you a ride and glances at you, why is he suddenly driving you home? maybe he just wants to help his fellow office mates, right? because he is not a romantic person, or vice versa?