Why are some girls more comfortable becoming mistresses rather than wife?

Anonymous
This simple guy was dating a stunningly beautiful girl. They were about to get married as well and already living together. One day she goes out of town on a business meeting. On return, she tells him "I met this fabulously rich guy who wnats me to become his mistress. He had already given me a diamond ring and got me a flat. Honey, you are a good guy but I am meant for richer guys" and walks out on him.
Is it normal for some girls to behave this way?
What should he do if she wants to come back to him after the rich guy gets bored of her?
Why are some girls more comfortable becoming mistresses rather than wife?
6 Opinion