Hi, I am a lot like that too. When I was younger I would always freeze up whenever a boy I liked came over. So I learned this in yoga..jus kinda relax your mouth, you tongue and jus jus sorta soften ur face...and take a death breathe...it relaxes you. And then jus try to think of something to say and causually say it. And dont say anything if you have nothing of meaning to say i mean like if ur jus saying something to say something then its really nothing and thats embarassing trust me i kno that form experience lol and dont worry you will get better at it.
Much Love, and if you have any questions ask me..and send me one of those private messages i wanna kno how everything worked out. Hope it all works out!

To me that was good