He took her away

Aiden felt that he is hyperventilating.

What does JoAnna mean with: doubt his sincerity? How can Sarah doubt his sincerity? He was never this sincere in his life! He loves Sarah more than anything in this world, and he would do anything for her… he would do anything to make her happy… but he messed up. He messed up badly! How did it end up like this? If he wants to make her happy, then he should do what she wants… and she wants two of them to be together. What on Earth possessed him to suggest for them to split up?

Aiden thought how he always plans for everything… How did he allow for Sarah to get this hurt? And more than once?