Kurt blushed and looked down at his outfit, feeling like he'd been caught red handed at something. Blaine knew him far too well. All of a sudden he wished he did have plans, if only for an excuse to be this dressed up to the nines. Because his current reasoning was 'I was feeling insecure and didn't want you to think I'm jealous, so I was as obvious about it as I could possibly get, because I'm stupid like that'. Yeah. Not good.
"Oh. No. I just... felt like dressing up." He heaved an awkward shrug. "Haven't in a while, so, you know. I figured why not?"