thanks for allyour suppoty
Is it that he was initmate with a man prior to you or has he been having sexual relationships with men during your marriage? Those two are very different animals. Either way, you need to work through this, if not with him on your own. Counseling is much needed to come to terms with this revelation. It is definitely a feeling of betrayal finding out that the man you thought you knew wasn't who he really was. Good luck, it will take time to recover from this but we are all here and can provide a great deal of support.
I agree, you really need to talk to someone professional about whats going through you now. You have every right to be shocked, confused and mad. You should also get tested for any STD's as you can not tell how long he has been like this or if he has been careful about everything. I'm not sure I would even ask him, as he may not be honest with you there either. If you have children, maybe get them tested as well. I really wish you well with this, I know it must be very stressful! Please come back for support anytime you would like!
What have you found out? Has he been actively bisexual during your marriage? Is this just something that happened before you got together? Does he know that you know? If so, what does he want to do?
I can understand why you feel the way you feel, you must be in amazing turmoil. My first advice would be, don't make any decisions yet. You need to let this run around in your head for a while. Of course you have to think about your options, it would be impossible not to think about them, but don't decide anything for sure right now.
Like heatherlynn22 said, go to counselling. Go to counselling on your own, whether or not you also do joint counselling with your husband. That will help you think through all your feelings and reactions, look at them more rationally, and so help you make a more rational decision about what to do next.
Good luck, stay strong, and look after yourself.