Well if I ever get a girlfriend I hope she gives good massages ^-^ My muscles get sore constantly lol.
My partner loves receiving them (or having his back scratched) but doesn't much care to give them (he also claims that rubbing my shoulders is like massaging rocks). As such, I visit our massage therapist a few times a year for a nice 90 minute full body massage. Usually I use the winter visit to also get gift certificates for several friends for Xmas and my partner who's b-day is in January.
Oh wow...couldn't help but crack up at that to the point where my back does hurt. Anyways, I think I'd be up for giving or receiving back massages, should I ever even get a bf...