How about you actually act like you're into this whole arranged marriage thing and work on making her happy. In return you'll be rewarded with her trying to help you be happy as well.
Since you had such a "brilliant" sex life with woman that you had no intentions of marrying, perhaps you can teach your wife how to please you the way the non-relationship worthy woman could?
Happiness is a state of mind, how about you work on your state.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion