i love her ?what do i do?

I am married.My wife recently started complaining that she is being fooled by me and not happy.I tried to explain her that things always doent work as we want.but she was like no you have ruined my life.i was all the time tensed suddely i met a good friend i started chatting with her and now i started liking her.but she somehow says she does not like me but still chats with me for a long time.what do i do.