OK... I probably shouldn't but I think I need to clarify to stop some of the madness and stop people misquoting me. (Note: I'm not saying anyone in these recent comments has mis-quoted me, but there have been times in the past where I have been mis-quoted. So.... here goes.... On the topic of harem... (*Deep breath*)
From day one, I have always specified that MY definition of harem is: The MC ending up with ALL women and ALL women knowing about ALL other women and being happy with it.  And based on THIS definition, then WTHI is NOT a harem game. Currently: It will not be possible to finish the game dating Bella and Elaine. You will have to choose between them.   And it will also not be possible to date Monica and Jenna/Katie. You will have to choose Monica OR Katie/Jenna.  There will obviously be plenty more decisions to make in the final episode, but it won't be anywhere near as harsh as people imagine (for me, the two most difficult decisions have already been made:  Bella V Elaine and Monica v Jenna/Katie). And the next most difficult still to come is the proposal decisions, because there will obviously be major re-percussions.
There are some women with cross-overs / interactions (e.g. Katie/Debbie/Lily) where it just wouldn't be possible to date one without the other knowing, so "cheating" wouldn't be possible, so you'll need to convince them to share or choose.  Note:  Marriage options will make sharing more difficult for some women. (e.g. a married Katie might still be happy to have some fun with her friends and MC... but if you break Katie's heart and marry Lily, do you think Katie would be OK with being an occasional fuck-buddy for you and Lily? Me, neither.)   There are also some women / groups that operate in different circles from others, e.g. Theresa (Theoretically, you can continue to see her without any of the other women needing to know.)   So, I'm not going to have a Jerry Springer moment, where MC has to have a final showdown with every woman he is continuing to see and HAS to introduce (for example) Theresa to every other chick he is banging.   Or an other example: Wanda / Angel:  Theoretically, you could continue to see both of those (or one) without people like Elaine / Jenna / Jolina, etc. being aware.  So... I'm not gonna force choices between very combo of non-interacting groups. But there will obviously be some more twists and turns along the road in the final act.  Also... (and I did mention this previously)... once everything is done and the "canon" endings are complete, there will be some epilogues and I will include some "fantasy" epilogues were some of the forbidden pairings mentioned above can get a happy ending.  These "fantasy" epilogues won't (obviously) make sense based on everything the game has been telling us so far and will not be part of the main game, but they may suit some people to give them their "happy ending." The reason these options won't be in the official final episode is because if I gave an end-game option for FULL Harem or an option where people magically accept sharing with women who they obviously wouldn't/shouldn't based on the previous 24 episodes, then it would just make a LOT of the decisions in the previous 24 episodes meaningless.
Hope that clears things up (somewhat), but more than likely I've just kicked over another hornet's nest. And for those that know me well, you know I love a good ol sting-fest every now and then 
I'm now considering living under a rock for the next 6 months until all discussion about this comment has died down.