how to avoid the gay behaviour?

I don't believe sexual orientation is a choice, so there really isn't a way to "stop" being attracted to a particular person or gender. You are a male no matter whom you're attracted to. How you feel and the attractions you have towards males are just as normal as a male feeling attracted to a female, even though some will try to convince you otherwise. Your sexual orientation is no different than the color of your skin, people are born with a particular skin tone and people are born with a sexual orientation. It's like if you were born with pale, white skin, you can't actually change your skin color to a dark black, you can try to make yourself appear to have a darker color by say getting a spray tan, but that still won't make you or change you into someone who has black skin. I hope this may help to reframe your thinking a bit. I'm sure it's not what you probably wanted to hear :/ Please know that, even if it doesn't seem like it, there are literally tons of people who will completely accept, respect, and love you know matter who you're attracted to. Because no matter who you like, you are still the same person. I truly hope you will be surrounded by loving and accepting people and that in time you too will be able to fully accept and embrace who you are. Perhaps try talking to a therapist or an openly gay or bisexual man, as he may have better insight and may possibly by able to relate to your situation/feelings. Stay strong and be you! I wish you complete peace and utter happiness :) :)