Just asking

So ive been wondering if my uncle is gay. He is 56 years old arealdy but hes never gotten married or has had kids. Hes had a girlfriend but they broke up. I come from a family where if you come out as gay they would treat you awkwardly. So iv been thinking that he has kept it a secret by dating here and there but never committing to make it seem like hes straight.What do you guys think?