The problem is not jealousy or insecurity you experience by going out with a bisexual person. It only causes problems if the person in question needs to be emotionly attached to the subject favoured.

David
bisexual, giong out with a bisexual girl who does not just look for physical pleasure, also emotional contact is important for her.

I do not know what to do, I need a way of dealing with this situation, oth....?