Well, the god of mischief was a bit surprised that he heard such a speech from Thor that he honestly expected something else. That wasnt the case. The one thing he hated the most though was that Thor never lied to him. So trying to find it unbelievable when it was clearly believeable was now out of the question. Loki tore his eyes from Thor, not beling able.to stand the look on his face before something else happened. He still hated Thor, wished his so called brother would have actually treated him like a brother. And wished Odin wouldnt have been such a cold hearted man to the point that Loki wished he was dead or never existed. Plain and simple. 
Admitting defeat this day, Loki looked over at Thor. "Do not think that this will get you anywhere near redemption toward me. However. I am willing to give this another go. Nt at anytime will I forgive Odin but I doubt he will just let me go without paying for my crimes."