Hiya, I can't give you too much of an answer from my own point of view as I find myself in pretty much your situation exactly (but from the other perspective) but I have 3 sets of friends that give me hope and I wonder if their stories might help you as well.
1 friend has been going out with his partner for years now, they are strong, they work at their relationship but in a relaxed way. He has said more than once that if he wasn't going out with her he would be a gay man but they are happy together and plan to stay together.
Another friend is in a similar position, took some time to "experiment" but came back to his mrs
Another primarily looks at guys but dates women
Gender and sexuality is messy and confusing at the best of times, if you two are anything like me and my better half you really need to work on being honest, open and understanding. Not just in talking about your own feelings but really listening to the other persons. It's a tough road in a relationship but I have seen many couples stay together throughout and be so much stronger for it.