As for interactions with the opposite gender, that is why you have parents, teachers and a family rav.
This might come across as harsh but in my opinion anyone who doesn’t know how to properly interact with members of the opposite gender should not be put in position to to so. I also think that if this was a legitimate option all along it should have been incorported into your chinuch. Forget the opposite gender, people must know the proper boundaries with same gender non jews as well.