We have so many in-sys relationships! I have a romantic relationship with my soulmate and wife Vicky, we’ve been together for over a year(in this life at least, we’ve been together in all our past lives too). I’m also in a purely sexual relationship with my headmate Serena. Missy, Bill and River have been together for around 4 years. CL and Ember are in-sys mother and daughter and started dating a few months back. Liv and Luke started dating as a joke a year ago but now have a genuinely close relationship. I could keep going for a while tbh. We love in-system relationships.
I sometimes have fantasies about my children despite having none so your not the only one.