The Other Woman

How is it possible to fall in love with someone else's husband? I don't intentionally go after these men...they approached me... I ignored one for 3 years. ...but one drunken night after the bar...we hook up...now we are together almost everyday. He doesn't leave my house until the wee hours of the morning...the latest was on Valentine's day when he left at 7:15 am. ... I don't feel bad...but I kind of do... .because I know his wife...and I wouldn't want to hurt her....but I'm crazy about him....yesterday on Valentine's day she wouldn't let him out of her sight...so he is coming over today to bring me my gifts....we live in a small town and have been behaving very reckless...meaning...we go out together...do things together. ...ride together. ..he parks in front of my house...I've been to his...their home...he has cooked for me...we've been out of town together. ...I've even met his oldest daughter. ...people have seen us together so it's only a matter of time before she knows it's me....what should I do? How can I fix this? How do I switch off the attraction and love I feel for him...we have only been seeing each other for 2 months. ..