Of coz they want you to be happy. But define happy. Do they know what you are doing? If they do, and they think it's ok .. by all means. Just know that if your kids thinks this way and find it acceptable, someday their partner may cheat on them and you should be ok with it too. It has to go both ways, right? Soon, your family and generations will be cheaters and be cheated upon because its your family's believe that it's an acceptable circle of life.