Did this character experience any growth or changes during the story (explain)?

In the beginning of the play, Orsino is powerful and determined. He is also moody, and a bit over the top in his attempts to get what he wants. What does he want? He wants Olivia.

Orsino is moody all the time. It's all about him. He's poetic and lyrical, but he has tunnel vision....... he just can't seem to see what's directly in front of him. Even when he finds out that Viola is really a woman, his character traits don't change. He immediately wants to marry her and he does. He was and is fickle to the end. I don't see much change in him at all.