I hear you. I used to dance with strangers at first as the party I went to was organised by a school I didn't attend so I knew noone there. I have been very lucky lately. To be honest, I can't believe my luck. I now have three boy friends that accompany me at parties (me and two more girls). Only a couple of nights ago, I told one of my friends that I'll call him my practice partner as the say in english meaning he is the one that helps me the most practice my moves. (If you are out there, you know I'm talking about you "TO ΠΛΟΙΟ ΓΕΡΝΕΙ!!!"). It does make a difference when you dance with someone on a regular basis. You can relax and not worry about who you are dancing with or if you are dancing with someone in the first place, so I really feel what you mean having spent so much time being out there on my own.