Oh please, oh please, oh please don't use anything like......

woman friend
partner
life partner (used more often in a homosexual relationship rather than a hetero relationship)
old lady
significant other
S/O
domestic partner (sounds like your dating your dog.....sorry PF hun!)
main squeeze


I absolutley adore "This is my lady ________ (insert name here)......but don't add friend to it.....it's just a tad condescending in that it sounds like she is not significant enough. And...to be quite honest.....I truly don't feel there is anything wrong with saying "This is my girlfriend_______", but if it doesn't have a good ring to you....nothing I say will change that in your mind.

I truly think she'll love being called your "lady".....and that is my vote! When you do intro her like this....watch her face for a glint of a smile! Best of luck treeview! You are quite the gentleman to want to make this a comfortable moment for you and your.....lady!

Awwwwwww! I'm touched by this thread!

__________________
Minds are like parachutes. They only work when they are open.

~Thomas Dewar~