It depends. Do you behave a certain way so you don’t get pegged as being gay? Or do you simply act that way because it is just part of your personality? In other words, you simply don’t have feminine characteristics
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I’ve known people who seem straight but are openly gay by being affectionate in public with their partner and don’t blink an eyelash when letting someone know they are gay.
If you however feel the need to use your straight persona to hide the fact that you are gay, then I would say you are in denial or to afraid to possibly face rejection.
I’ve known gay couples that fit the society rules of one more masculine than the other and other that where not that way at all. Everyone is different. I think you have to decide if you are fitting the masculine role for yourself or for others.
I’m not gay, but it even happens in straight relationships. Sometimes the guy is the more sensitive person in the relationship and the woman is not. I think everyone has a feminine side and a masculine side. Or I should say, a sensitive and empathetic side and a firm no nonsense side. Not really a guy or girl thing.
Go for being true to who you really are. It doesn’t mean you have to scream to the rafters that you are gay. But it also doesn’t mean wearing a persona that isn’t true to you to keep your sexuality hidden. Just be you.