Sorry about your life being turned upside down over your daughter's choices, but truly, they are HER choices.
I have to ask, would you have withheld a college education and a car if you knew that she would down the line, not love the man she married? I think that's harsh and short-sighted.
She probably did not date enough and felt trapped with this man. She shouldn't have married him, but she didn't know it at the time. It is wrong to have an affair behind a spouse's back, but quite frankly, she didn't do this to YOU. She did it to him. You are taking this far too personally.
Next time she gets married (if she does), she does the wedding on her own dime. I suspect that if her "addiction" were with another man, you'd be upset, but not nearly as upset as you are about this woman. Regardless, if she has married the wrong man, she's married the wrong man. Wishing you hadn't paid for a wedding isn't helpful.
If you can't see wishing that you hadn't spent money on a college education, a car and a wedding, then it sounds like you expect your daughter to live her life to please you, and you aren't really understanding that she was not brought into this world to please YOU. She is here to live her own life. She needs to learn from her mistakes. She is an adult now and has to stand on her own two feet and PAY for her mistakes.
That doesn't mean that you need to be supportive of this choice. You can tell her that you are too upset with her to be supportive. But that doesn't mean that you throw your daughter away. Yes, she's being selfish for going with her heart in a love relationship. That's what happens with MILLIONS of people who leave their spouses for someone else. But it's far MORE selfish of you to tell her you won't be close to her as long as she is with someone she loves.
Stay out of her love life. Tell her you are disappointed that she has not given her marriage much of a chance, but at least be glad that she didn't wait and have children involved.
Your job as a parent, D., is to love your children. You might hate how they screw up their lives, but it's not YOUR life they are screwing up. It's their's. If you persist in acting like her bisexuality is a personal affront to you, you will end up losing your daughter. If you would rather stand on your principles that she is supposed to live her life for YOU, then you will end up with no relationship at all. Maybe that seems okay to you now. However, there are mothers on this board whose children have nothing to do with them for many reasons, and they are SORRY that they lost their relationship. Think hard before you lose your daughter. You may not get a second chance with her.
Dawn