Well, when you use the word "demands," it sounds like she is in charge, and what she wants is for you to find another gf for sex, since she is busy having sex with her gf and wants you off her back.
But then again, if you do get a gf, she will also be jealous? She needs to get herself sorted out, her desires and feelings seem to be at odds. And you need to be more open and figure out what is really going on here.
BTW, why are you living at "her" house and having a fear of being kicked out?
Love withers under constraint; its very essence is liberty. It is compatible neither with envy, jealousy or fear. It is there most pure, perfect and unlimited when its votaries live in confidence, equality and unreserve. -- Shelley
me: Mags, 59, living with:
miss pixi, 37