A "cougar" is typically defined as an older woman who is primarily attracted to younger men, often involving a sexual relationship. Although there are no precise ages , the woman is usually 35 years or older with the man more than eight years her junior. Some people consider "cougar" to be a sexist, derogatory term , but the meaning varies from offensive to empowering depending on the person. The term "cougar" is an example of how modern culture defines and prescribes roles for heterosexual women and men in society; other similar stereotypes include sugar daddy and sugar mama. What these have in common—aside from an age difference—is an imbalance of power and wealth, with the wealth and power being held primarily by the older person.
ABANDON | meaning in the Cambridge English Dictionary
Does wearing a silver ring on your right-hand ring finger mean you're gay? As it does if you are artsy, bookish and "alternative"? A few years back, if you were wearing these kinds of accessories, like rings and earrings, people would point the finger at you for being queer. These days, the description of the quintessential homo has changed to ambiguous at best and less labeled. Damaging stereotypes and generalizations of queers from the older days still linger on today. We gay people are a diverse and broad group of individuals, who come in all shapes and sizes and personalities and dress.
Straight women are much more likely to get themselves knocked up than gay women. So, in terms of evolution, they would seem to have a better chance of passing on their genes, while at the same time it would seem that the genes that make women gay would quickly vanish from the gene pool. This raises the question, why are there gay women? Lesbianism is indeed at least 25 percent genetic, as determined by a study of twins conducted in the United Kingdom.
Bisexuality is romantic attraction, sexual attraction , or sexual behavior toward both males and females,    or to more than one sex or gender. The term bisexuality is mainly used in the context of human attraction to denote romantic or sexual feelings toward both men and women,    and the concept is one of the three main classifications of sexual orientation along with heterosexuality and homosexuality , all of which exist on the heterosexual—homosexual continuum. A bisexual identity does not necessarily equate to equal sexual attraction to both sexes; commonly, people who have a distinct but not exclusive sexual preference for one sex over the other also identify themselves as bisexual.