Polluting her mind is thoughts of a certain bat thief. Wave likes women, maybe a bit too much. These feelings suck, she hates them. She's supposed to be stoic. Wave is supposed to be a rock. This is a thing Jet and Storm would pull. She hates this. The thoughts pollute her mind, so much and for so long.
To act on it would be stupid, to not act on it would equally be as stupid. Letting feelings be buried might be worse. So she decides to get it over with and confess. Let it go and get it over with. No more problems after that. So she goes and finds Rouge and confesses.
Wave wasn't expecting for her to say yes.
"What?" Wave looks at her glasseyed.
"I'll go out with you."
"...Seriously?"
"Yes?"
"Really?"
"Yes! Are you okay?"
"No! One of the hottest girls If not the hottest girl I know, said yes to me!" Wave panics and puts her arms out to punctuate her shock at Rouge's response.
"...Aw thank you."
"...So um, see you later?"
"See you around for our date cutie."
Now Wave had a date to plan. Blushing all the way home. Now she can only be bummed because she has a weak spot, a very big yet probably very capable weak spot. So they'll most likely be fine.