Tolerance means that differences are perceived as nothing more than differences between people. Most people are also drawn to people who have a sense of humor. A person who can laugh at himself is someone who might be a lot of fun to be around. Anyone can make fun of someone else, but to be able to be self-effacing with style is something that is admired. People who can make light of somewhat difficult events can draw the attention of many others.
Sincerity means a lot to people.
Women almost equate sincerity with long term commitment which is what most women biologically need. Sincerity is not always easy to manifest in relationships because of the very different ways that men and women think. People of both sexes admire those people who can be upfront about who they are and what they feel when it comes to the long term. Flexibility is the trait of adaptability, which is of course what life is all about. The person who can adapt the best to changing circumstances is usually the most successful or effective individual in any given situation.