I saw this question before and I would never do it. Even If I was married for 20 years, because feelings can change at any time and people can fall out of love. I would never want the name of a girl I broke up with on my skin. I would get a tattoo of my parents, name, or kids, or any close family member, but never a spouse/girlfriend.
Yep, I agree I would only get a family member or my kids. The only exception would be if I was married, completely in love, and my wife passed away for some reason THEN I would get a tattoo of her name.