Shawn didn't really want any ice cream, but he appreciated the gesture so he ate it. This was probably the best progress he'd made on convincing Riley that he actually did love her. The circumstances sucked, but at least something good came out of it.
"I have my moments," he said, clearly amused by her thinking he was smart. "And I know this is hard. Unfortunately, that's part of growing up." Whether or not you were ready for it.