At the end of the day just remember to be kind and decent to your friend.
Do not attempt to make them change their sexuality even though I doubt you would think that.
Should their father abuse them remove and get help preferably from known lgbt charity's.
If your dad should disown him or treat him with l will then he has broken the very basis your religion in that he has decided to remove the concept of kindness and common decency in relation to his own son.
Should your best friend act on the fact they are gay this is little issue as an all loving God should take little issue with it, as long as he has done good deeds and shown good will to his fellow man then there is little issue.
As for fortification all sin is equal under God as I take it, somehow anyway apparently sex is equivelant to murder but who am I to judge.
Resident humanist out.
