You say that you don't believe in God or the Bible as His word. Fair enough. However, what evidence did you obtain in order to lead you to the position you now hold? Secondly, will your evidence hold up against examination from those willing to refute the position you believe?
Many people will support their friends or family even if they know they are wrong. By doing so, they become partakers in the evil actions committed by those offenders. This is a bad move and no one should support wrong, whether done by friend or foe. If your friend is wrong, tell him or her and never support them in wrong doing (1 Timothy 5:22).
"What God has joined together, let not man put asunder," Matthew 19:6. The Almighty has selected one male and one female for marriage, which is to last till death. We are living in times when liberal thinking people are attempting to put asunder what God has joined together. All religious leaders, better heed God's warning! (Isaiah 9:16, Jeremiah 23:22, Isa. 5:20).
Hope to hear from you or see you at the services.