Dragon Age 2: Can you still have a rivalry romance with anders if you turn on him in Night terrors?

I'm wondering if I went a bit too far... He seemed very angry at me and was all "GRR! I WONT BE WITH A MAN WHO BLAH BLAH BLAHS! Merril for you!" And I'm all " Aaaaaahhh no." I'm afraid I may have pressed the self destruct button on my angry romatinee plans|||If you mean you accepted the demon's deal then you have ended the romance. If you want to go through with the demon's offer you need to bring someone else with you. Anders will never know about it if he's not in the party.