As the above said, it's not a straightforward idea. You you might want to at least flesh out the idea a bit with how it could conceivably work, as opposed to simply saying "I want a harem". Please bear in mind that posts consisting of a single word or less are considered spam, and are prohibited under forum rules.
currently u can date multiple people. actual harem would probably require storm.. if at all possible. would require: new bed locations for the other spouses which would require new pathing nodes for the somewhat rudimentary pathing system new handles for the extra spouses so the game doesnt only tell the first one what to do extra spouse schedules for the new ones modification of spouse schedules to make sure they dont all try to move to the same spot modification of events to use the new handles if appropriate + a few other things i probably missed. in short.. it will take quite a while. storm isnt even in a release state yet. once storm releases though... would be nice to have ^^