Of course in a wish fulfillment fantasy you want to have your wishes fulfilled, and them all staying together as the "Gang of Seven" even if not romantically involved would be absolutely fine. But I still want to argue that it is kinda realistic that groups disperse. Some find work elsewhere, or another love, or just want to see the world. When I look back to my friends from that period in time quite a few are "gone". Heck, I was "gone" twice, only I came back. With some we try to meet up as often as possible. Others just fade out of our lives, no hard feelings. Of course, many are still around.
But let's also not forget that - except for Lyndie, Aoife, and B, or MC and Chris - these are not lifelong friends in this group but a crew which had fun for a couple of weeks and weren't even all connected that much. What did Drusilla and Kimberley have in common despite having been at the same party twice, so to speak.