ATWT: From Go Henry to Oh Henry!

Last Monday, I was rooting on Henry for finally giving Katie what she deserved. Well, it isn't even a week later (in real time—same day on the show, I think) and here is Henry forgiving Katie's transgressions. How can we so quickly go from Go Henry (Go Henry, It's your birthday) to Oh Henry (said with much disdain)?
I understand the point of Henry wanting his best friend back in his life, but what kind of friend is she and what will Henry think the next time she squashes him like a bug to get what she wants?

On a side note, that peach/orange shirt and tie that they have had Trent Dawson in looks really good on him and brings out some coloring for him. But even with that, I am a bit tired of seeing it (though it does make me realize it is the same day).