My husband is GAY!!!!

How can i have not known???????? I feel so fucking dumb and disgusted how can i be making love with someone who fucks guys! I accidentally found a video on his lab top it was sent to his email! I had a feeling that he was cheating but to find out he is sleeping with a man! I went crazy i took all his shit and set it on fire in our back yard he got home and he didnt have anything in the house i took all of it out and asked for a divorce. I gave this guy 8 years of my life and he had a secret agenda he has the nerves to say his sorry and for us to work things out. I cant believe this . this is embarrising to me i have no one to speak too because how embarresed i am for being dumb and not noticing his gay