Yes and no Dorothy concerning an ultimatum however as a blind male I know more then once I had been blind sided and ended up wishing to hell the lady had hit me over the head with her unhappiness. You should be as nice and kind as possible consisted with getting the message across in my opinion.
My now wife and I once was living tegether for a number of years decades ago and she found herself unhappy with the relationship and instead of talking with me over it she just move out.
First as I was as happy as a man could be I kind of assume she was happy to and I was bitter for years that she did not talk to me over the issues before ending the relationship.
One thing I had now make her promise that she would let me know in clear big type face any problems that our relationship is causing her.
Sometimes I think she can overdo being so direct but it sure beat the hell out of finding someone you love had ended a relationship without talking to you first.