First this:
GO MIKA
and now this, I just had to say something:
Children don't become homosexuals the are born that way, to put it simple, it's all about how your brain works and how much of certain hormones your body produces.
Those children will know that they are different from a very young age, because they can see or hear from others that there are little things in which they are different from other (heterosexual) children.
At first they don't even know that they are different. But when they go to school there teachers might ask there parents about certain behavioral difference that they show or the parents will notice it themselves. And then there is a choice for those parents accept you kid the way they are or FORCE you kid into a different lifestyle because you can't accept the way your kid is or you are afraid of that others might say.
And when that kid is forced to live a different lifestyle they might look normal on the outside and they might act heterosexual but on the inside they are afraid of being judged and unhappy because they can't be who they really are, because others might hurt them because some people decided homosexuals are abnormal and should be cured and ignored with force.
And children do not "go to bed with someone" like you said.
Just an example of a child that is different from an early age:
A heterosexual girl (child) might come home with a drawing of superman and tell her mommy that she thinks he's cute or that he's boring because he is a figure that boys find cool.
The parents will laugh and think that it's cute.
A heterosexual boy would come home with the same drawing and tell mommy how cool superman is and that he wants to be just like him when he grows up.
The parents will buy superman clothes and lunchboxes and think it's cute.
A homosexual boy could say that he thinks superman is cute or boring like the little girl did.
Parents will think it's odd and will accept this or force that boy into superman clothes and give him a superman lunchbox because that's what other boy's like and the hope the "problem" will go away. But that little boy will be miserable.
Being a homosexual is not just about sex and doing something that others might consider a sin it's just who they are.
And who they are is people, humans, they have feelings, dreams, interests, hobbies, they might want to have/adopt a child, they want to grow old with someone they love just like everybody else.
The only difference is that they want to do these things with someone who has the same gender as they have.