Same. I can get pretty gregarious and silly once I get comfortable, but if I'm not comfortable I'm suuuuuuuuper quiet. I have this one friend who always invites me out to her birthday and I have to mix with her very diverse friend group and I always feel like an idiot. Love her to bits, but I'm better solo! Or with other friends I already know. Like her sister and her nephew. That's a fun outing.