My adolescence kid had mentioned that he is now attracted to both genders, how can i guide him or address this issue?

Your perspective may determine eventualities, however time to avoid prejudice because you may end pushing him to the opposite of what you desire. Help him to sort out his emotion since this is a time of confusion for most youth and finding himself may be the most important thing. Attraction to both genders is not the problem, we all want to be loved. Friendship vs sexuality and healthy relations.

If your child is experiencing anxiety because of sexual and identity issues it would be good to see a Clinical Psychologist with expertise in multiple types of psychotherapy to help with developmental issues.