My husband has had sex with 2 men 🙁

This was 12 years ago. But I recently found out more details. And I just dont know how to feel. I have a hard time sometimes with the fact that my hubby has been with men before. This isnt new info,but it came up last night on date night. I ask queations that I dont want to know the answers to. I knew he had been with a guy,but last night he told me it was 2 times. 2 seperate nights,2 different guys. Both in the same week. He said he was 18(now 30). And that he was on alot of drugs at the time(cocaine,ecstacy,pot). And he said he knew he wasnt gay,but just experimenting. I just wonder what made him try again. Is my husband gay? Is he bi? When he talks about it,he is ashamed and grossed out. He said never again in a million years would he do it again. Uuugh. How do you forget about this? How would you feel?