How do i overcome my fear of my roundoff backhandspring?

I had my roundoff backhandspring by myself over a year now. And all of a sudden i am scared to do it?! Idk why but now everytime i try to do it i get scared and i have to have my tumbling coach right next to me. He doesnt even have to spot me but i need him right next to me when i do it. How can i overcome my fear? And im going to a party like next week and the guy that i like will be their. and he always likes to see me do my roundoff backhandspring. So please help.