The anger is because of the betrayal. Her past is the past and I love her for who she is today. I now know she has a different view on sex than I do (from current conversations) and to learn this about a topic as important as sex is bothersome to me. Also knowing that she has quite apparently talked about this with her girlfriend and shared the information with her but not myself is not something a husband wants to find out.
No one likes to learn they have been kept in the dark by there spouse.
If the past is the past when why is it a topic of conversation between two girlfriends that have only known one another a few years. Obviously for my wife it is something she has no regrets over and is happy to share with a friend.

Also to find out she has enjoyed a sexual experience with a female is not ideal either. Not trying to compete with that if you follow my drift. Since I now know she would deceive rather than come clean how am I to know she has not done something with a female since? Obviously it causes trust issues when you discover you have ben lied to by your spouse. And she has an attraction to females and has taken that a step further and enjoyed the experience. I know have to wonder how often she thinks about being with a woman. I doubt she would ever tell me.
These are some of the very reasons I wanted to be with a like minded individual from the beginning. I don't want this confusion in my life and have seen what it can do to a marriage. Now I am forced to live with it.

I also see a pattern through the readings I have done on here. When a man lies he is genuinely ridiculed in the posts but when a man complains about being lied to by a woman there are a multitude of woman that jump on here and start stating what I did that would "make her lie"
I understand that it would have been hard for her to be truthful but we all need to be honest with people we are going to marry. The skeletons always come out of the closet eventually. If I voice to her that it is important to me (which I did) and she chose to lie (which she did) how is that in anyway my doing. We are talking about the person we sleep next to every night, and yes it has been a good 14 years but how will I ever know if she is satisfied with our sex life now that I know she has a genuine interest in woman as well. She would obviously never talk to me about it. If I was married to a woman but wanted to be sexual with men as well wouldn't that be an issue?
How would you all feel if your spouse came home and told you they actually had sex a while back with a person of the same sex and they enjoyed it. I know when it comes to sex the things I enjoy, I do as often as I can. She has to deny herself that to be faithful to me.. Hope she can..