Now that you have a clearer answer to what is emotional health, explore and experience more emotional health and wellbeing. Cultivate your emotional wellness in a kind and gentle way. This exercise cultivates a good feeling. It's an exercise in self love. Be open with your self. Take a few deep abdominal breaths.
Your question is badly worded. A person IN LOVE with themselves is a narcissist. But everyone should love themselves. The difference is the level of attention one gives to oneself. Someone who loves themselves is a balanced person. A person in love with themselves is egotistical and cares for themselves above others.
A gay person is someone who is physically and emotionally attracted to the same sex, unlike the majority of people, who are attracted to the opposite sex. It is not currently known why some people are gay when the majority are straight, although there are a number of theories.