Joy is a fruit of the spirit, happiness is not. Joy is greater than happiness. So, you do not see happiness in love? When you love you are not happy?
If ye know these things happy are ye if ye do them(Jn.13:17)
If I were being sawn in two for my love of God I would not be happy. I would however have Joy.
There are a number of things that I have been forced to do (especially concerning my children, but sometimes concerning the discipline of adults) out of love that have been anything but happy. However, there is a joy connected with doing the will of God, even when the performance of that will is not a pleasant task.
Face it, you don't want to be seen as agreeing with us "evil" Calvinists on any level, thus your stubborn refusal to accept that we may have been correct on this point.