Absolutely not. Not trying to be mean or rude, but whoever told you that is an idiot. Not every gay man has to be flamboyant and has to sensationalize their sexuality. I am gay and I am not flamboyant at all. My boyfriend isn't flamboyant at all either.
Just be yourself. Don't try to fit into any stereotype. It's just not worth it. Every gay man is different. Like I said, just be yourself. There is no need to change who you are or your personality.
Gay people have a special protein in their body called homotine. Basically, if you act very feminine, you're probably gay and are genetically predisposed to produce vast amounts of homotine. If you identify as gay, but don't find yourself acting feminine, you're either taking homotine suppressant pills or you're not really gay.
All the masculine gay men you see are either taking homotine suppressants or they're just wrongly lead to believe their "homosexuality".
__________________ OMFG LUL D OBVUS TRULOLOL IS SO OBUVUS DUH. BT LYK IM NAWT D TRUL BCUZ IM NUT OBVIUS ENUF K THNX BAI.