This is a very sad situation and I am sorry that you feel so sad within yourself for doing this but my suggestion for a while is maybe stay away from relationships just until you work on yourself. You need time to teach that your a confident beautiful woman that you don't need no man to make you feel wanted you need to believe that you are wanted then you'll attract men that want you for who you are not for a one-night stand. People always blame the mistress but to be honest I feel sad for the mistress they are usually the ones that felt unloved and had to sink to that level of love and admiration from a married man. People need to get angry at the man who cheated not the mistress because a lot of the time mistresses don't even know there is a wife and there being lead on. Honestly though the only person that can make you feel wanted and valued is you. Get a mirror and tell yourself that you are a beautiful strong woman who is wanted for her inner beauty. If you do this long enough you'll believe it good luck to you!