Studies in twin data suggest the opposite. There seems to be a genetic component, but non-genetic influences and choice play seem to play a larger role. Sexuality is mostly mental and the power of positive reinforcement of sexuality to alter someone's behavior can not be understated.
I have to laugh when I see people post "twin studies" to argue that there's no biological component to homosexuality when any honest interpretation of twin studies suggests exactly the opposite. With monozygotic twins, the chances of both being homosexual are 1 in 2. For non-twin siblings, the chances are 1 in 20.
Anyone who can say that supports a finding of "no correlation" is either completely incapable of understanding objective scientific studies or is simply and unabashedly dishonest.