First date jitters. Someone help me

My boyfriend of three years and I are taking a break. So I asked my ex boss out. Which he responded with "you don't know how hard it was to not hit on you as your boss"

Of course this makes me feel great..were going out for some drinks tonight.

Im just so nerves. My mojo is gone. I need help a pep talk or something!! Please what can I do to get these nerves to go away??? Why am I so nerves, I wasn't nerves when I asked him out!