married man trapped by a married woman - cheating

I am married since 26 yrs have wife and two children. Recently in 2012 I happened to meet a women who is also married and have one child. She comfortably trapped me telling that her hubby was not looking after well and she explained her financial problems and one day she trapped me and forced me have a sexual contact. Even after that i made her comfortable by providing huge amounts. Of late she started to torture me by developing a jealous feeling on my wife and children. Please advise me what to do to get out of her torture but still i have a soft corner on her.