Interesting. I feel so lucky to be a girl sometimes. It seems like guys have it easy in a lot of areas but I've have never in my life worried that I would have sex the wrong way. My partner were always so eager that I did not get a chances to worry about my performance, I was just worried about it I was making the right decision about whether or not to stop or proceed.
I don't know why being with a professional would be less intimidating than with someone you like. I guess you think more about the techniques you will learn and less about pleasing the professional.