Klaus-Aurora
They were epic love of their times! Klaus genuinely loved her and she loved him back equally! She wished to be with him and so tricked Rebekah in pure Katherine-style to give her blood!
The betrayal
The betrayal looked accidental and totally justified to me. What else do you expect from a person who stood by his brother, ran away from his homeland only to realize that the person for whom he has done so much is the reason behind their misery! Elijah accidentally compels Aurora to tell what she knows about Niklaus deep secret (Esther's murder) He is super angry with Klaus for doing this and yet again accidentally compels her to think ill of Klaus! This all results in their break up
Blame-Game
Klaus, being Klaus, blames Elijah for everything he has done in his 1000 years! Clearly, Mikael and Esther are not enough for him! It's brilliant how this man blames everyone around him for destroying him but never tries to look the role he played in making himself the person he has become today! Elijah's 1000 yrs old of support and help is clearly nothing in front of this justified betrayal!
Jackson-Hayley and Davina
After a long time, Hayley was bearable and quiet sensible! Surprised na?! She gave some good tips to Davina regarding leadership even if she, herself, sucks in it! Jackson was mostly visible shadow without much to do!
Vincent-Cami
Vincent and Cami tried to play detective in middle of a festival to know what exactly Lucien is up to but Lucien out played them and also told Cami to not think that she can understand him if she does Klaus! Anyway this detective work turned out to be more trouble for Cami than expected because she was suspiciously left alone with a dead body which made the new police officer (that new guy) to arrest Cami!
Overall episode was quiet good but i just hope Klaus gains some sense and starts realizing that his own mistakes has made his siblings turn against him! Also don't forget that these same supposed back-stabbing siblings stood by him and protected his daughter at time of need