Why do so many people think that only gay people have same-sex relationship?

It all starts with educating people and not getting frustrated with them. What I like to do is take the l-g-b-t acronym - and just break it down for people people and explain to them what each letter stands for.

L - a llesbian is a woman that is in to other women.

G - a gay man is a man who is in to other men.

B - a bisexual is someone that is equally in love with either gender.

T - transgender - someone born physically one gender but who is mentally and spiritually the opposite gender.

In your case, I would emphasize what the b is and get good at explaining it. As a gay man, many straight people think that this also means I might be trans. So over the years I have gotten good at explaining the difference between the t and the g.

Don't get upset at people. In many cases you might be the only person they know who will calmly explain it to them. But you will be doing your small part to make society just a little bit more tolerant.

Gay is finding a unnatural hole full of feces and pretending that it is a vagina and ejaculating in it. Saying someone is bi is saying they are gay. No straight person would ever get sexually confused but gays manage to be even though they claim to be born gay and cant change. Sure you were! Being born a certain way and not be able to change would come with no confusion. No one is born depressed or gay or a pedophile. You become that way through life experiences.

generally gay means anything that isn't normal eg homo, people into chicks with diks and whatever else sub-species exist. And straight means normal

Small minds, insecurities and borderline stupidity.