How tf am i supposed to talk to attractive men

I rarely ever get crushes but i really like this one guy. I cannot speak to him at all. We can sit together in group settings and i literally have to physically force myself to look at him in the eye when he directly talks to me personally. A mutual friend also snitched and told me he said i was pretty SO I HAVE A CHANCE. Yay?

But how tf am i supposed to navigate attraction when my social anxiety is this bad. The "butterflies" and the nervousness that comes with having a crush coupled with general social anxiety SUCKS ASS. It leaves me borderline paralyzed. How do taken socially anxious folk do it i don't understand