My husband wants a gay experience

I'm the wife of I guess a CD man

My husband sneaks around wearing girls panties that he buyS for himself or wearing mine. He used to buy me tons of panties but nothing in a awhile because he is buying Girls lingerie or panties for himself instead. He recently bought his own dildo. Takes ALOT of pics himself wearing girls undergarments. He recently Googled where to discreetly meet other men willing to fuck and googles about fucking other men. Don't know if he knows, That I know, but I caught him talking to another guy about fucking and sucking him and sharing pics about his Dick in panties.

Please help and share advice. I don't know what to do and I would like to talk to him about this and confront him with this. But the only way I know is by snooping through his phone because he hasn't told me any of this. I only start snooping through his phone because I caught him wearing my underwear. It was when I caught him wearing my underwear and him saying he liked the way they felt that I got suspicions of him having feelings of wanting something different sexually.
I feel awful about this. Please help me. My heart is broken.