Before you talk to your husband I think you should ask yourself some questions and think about it.
1. How will you feel if you find out he is gay and sexually active that way?
2. How will you feel if he blows it off as a weird dream and you somehow don't quite believe him?
3. How will you feel if he confesses to having gay thoughts, dreams and yearnings and doesn't think he cannot NOT act on them eventually?
4. How will you feel if you wait a bit and see if there are any other signs that cause you to worry more?
5. How will you feel if you wait to see if anything else comes to light and nothing ever does?
6. How is he as a lover, father, provider and helpmate?
7. Do you really talk to each other already or are you still learning how?
If you can get a handle on what your own thoughts and feelings will be in the various scenarios, then it is time to ask. But you need to be prepared to be surprised. It could be nothing, nothing serious, or serious....