What you play in front of an audience is your 'real level'...
Lots of people are great bedroom guitarists, but they don't have what it takes to play standing, with the power of an audience given to them.
I suggest that you practice what you want to play in front if these friends, and with time, you'll be able to play it almost as good as when you are alone (but not as good), but good enough so that you aren't disappointed.