Is it cute to get overly flustered when someone flirts with you?!

Hi I get really easily flustered and because I’m a bit on the spectrum often times have little stims I do like rubbing my nose as I bounce on the balls of my feet when I get flustered. I’m really self conscious about my nervous, flustered stimming so I mainly stick to flirting with my eyes but always end up retreating as soon as I realized the other person noticed me. Long story short, I’m shy as hell but I want to get over that. Any tips? And is the nervousness something I should just learn to be okay with?