It was consensual up until she said stop. Stop means pull out and quit. She was squeezing way too tight for it not to go in and shaking so bad. She would have been more relaxed if you spent more time on preparation
Video would have been much better if he wasn't pushing rope with his little dick. He definitely needs some chemical help along the lines of Cialis or Viagra.
Why was anal insertion so difficult here ? With so much lube used insertion wouldn't had been so hard and painful. Also he should have licked sucked her butt and asshole passionately before anal. Also her boobs and nipples need sucking licking and biting biting during anal. This would have distracted her mind from pain to pleasure.