There are three forms of sexuality and they are heterosexuality, homosexuality and bisexuality.

Heterosexuality - It is the emotional and sexual attraction or sexual relation with persons of opposite sex. This group is the majority.

Homosexuality - It is emotional and sexual attraction or sexual relation with persons of the same sex. It is reported in ancient times too. Surveys report that 5% to 10% of men and women have an exclusive homosexual orientation in Western countries. In many countries this is prohibited and is an offence and in other countries one could marry his/her same sex partner.

Sexual orientation and identity starts from adolescence. There are no scientific explanations for this.

• Gay - he who has strong emotional, physical and sexual attractions for other man is a gay.

• Lesbian - Woman who has emotional, physical and sexual attractions for other woman is a lesbian.

• Bisexuality - Man or woman who has emotional, physical and sexual attractions for both man and woman is a bisexual.