Both are behaviours. Some say they are both choices whilst others claim that people are born into them. Both behaviours have been traditionally frowned upon and are unhealthy. One can pray for those who find themselves engaged in either behaviour, but one does not have to accept the behaviour.
I am of the belief that people are born gay. Not always, sometimes it can be a choice particularly with lesbians, but I’ve known too many people who are gay not to believe it is genetic.
The only choice with them, then, is to be celibate or not.
And, if not, to behave responsibly with partners or not.