Sorry to hear that you are confused. I know how it feels. I am a homosexual Nepali and before I managed to get out of the closet, life was miserable for me. You don't need to prove your sexuality to anyone else. You don't need to go around and force yourself onto girls just because of some lame suggestion you get from a person who doesn't even try understand you. Believe me there are many people who are insecure about their own sexuality so most of the time they satisfy themselves by ridiculing you.

And no, your parents will never accept you. Like most of the Nepalis they think you have some sort of disease and they want you to go for a treatment. One of my bfs was forced by his parents to go to a shrink. Was forced to get married to an innocent girl. The marriage didn't even last for a year. I was never attracted to girls and it took me 23 years to realize that I was a homosexual person living in denial all the time. My parents are living in a hope that one morning I am gonna wake up and will be "normal" again.

Just accept who you are, and things will be easier.