I've had the "are you gay" question like 5 times including family!?!?!?

Hi I'm a 20 year old male And for some reason everyone thinks I'm gay??? I don't know why they think this, I haven't had a gf in a few years but that's out of choice (not that they believe me) I speak in a way that's...not really normal but I wouldn't say its really unusual I make sure I pronounce all my letters and I don't like to sound (sue me) common. I hate football in fact I hate all televised sports but surely that isn't enough to make them think that? My grandmother sister and father have all asked me,my mother hasn't but I KNOW she thinks it. I don't have a problem with gay people but you can imagine how annoying it can be. My question is should I just go pfft why the **** not? learn to play football pick a team swear and blind and wolf whistle at anything that walks by? (I know thats a really literal suggestion but you catch my drift)