I would have replied to your last thread but it has been closed. I will be angry if anybody interferes with this thread for the purpose of offering their opinions about your private life.
My question is this, please:
You say you are using an agent. Have you been using this agent since the beginning? If so, why has it taken until the 11th hour for the agent to discover that you may not be able to satisfy DIAC that you are in a genuine, committed, ongoing relationship? Surely an agent would get all the evidence needed for every aspect of a skills assessment and visa application before doing anything at all about committing fees to third parties?