Would the audio recordings be valid in court?

Hi, I've been married for two years and it was a loveless marriage. I've been vocal abt my problems nd he hasn't responded or acknowledged my issues. Finally when my saturation point was hit, I told him that I'd like to divorce him if the same continues. He started suspecting that I've someone else in my life. He installed an audio recorder and keep tracking my emails nd phone. I was attracted to an old friend and he has too much private information now. Would that info be used against me proving it adultery in court? I've changed passwords nd he is angry about that..he said we could go for mutual consent divorce. Also would I be eligible for maintenance if I'm a home maker.