LOL (sorry)
You guys still try to read between the lines where you really shouldn't.
It's easy:
- Player can sleep with other women
- Nicole COULD sleep with other women and/or men, but she will NOT do that.
- open relationship is needed for further possible path which is not quiet obvious right now
and in general:
Characters can change and sometimes it's not what it looks like on the first sight.
Just for example -> no one is born with kinks - after couriosity, you might try out a certain kink and start to like it.
Such things also can happen in a game's story.
So (except the devs, and myself for small details) no one of us (NO one) is able to know what will happen. You might assume, but you also might be wrong.
Nevertheless the 3 points above
(it's easy) are valid and legit!!!