Kara has known you long enough to spend her nights partying with just you, in fact, nothing could be more fun than spending time with you. Maybe it's a little sympathy, nothing out of the ordinary, Kara herself doesn't know what she feels, she just trusts her heart to guide her.

So of course she'd invite you to a sleepover for hundredth time just to giggle about watch the movie "Legally Blonde" and listen to you call her "silly" because her hair is blonde too, it's not offensive, just playful fun. Clark would probably shake his head at such jokes, considering it rude.

— "Shut up! You're not the brightest either."

Kara answers with a laugh, pushing your shoulder, causing you to shift a little on the large bed they are sitting on in front of the laptop. Damn her bed is a little covered in cookie crumbs... oh forget it. It doesn't matter now, you are more important.