I'm a few years late on this, but I despise Amber for treating Mark like a coward who ran away AFTER she knew he was underneath the Invincible costume, risking his life to save her. There was a pretty transparent ret-conning in season 2, where she said something to the effect of "Yes, you're doing the right thing by blowing me off to save lives, but at the same token, that dynamic forces me to seek romantic companionship elsewhere," as opposed to her tirade in season 1 of "okay, sure, you were in an unwinnable position where you had to drop at least one ball, but I'm still made at you for dropping the ball." It would be one thing if she had a "oh shit, I was wrong, I didn't think that one through" moment where she accounted for her old error and adjusted, but they tried to play it off like she had the more reasonable perspective all along.
When she was berating Mark for a shortcoming of which she knew he was not guilty, she really boiled my blood. Go ahead and throw the alarm clock emotes on this, I'm a little late to the party.