A mentor of mine explained to me that "tough love" isn't really love at all when you examine it.
Putting time frames on stuff, especially short time frames, doesn't pan out in real life. In real life, sitches can take longer than a target date chosen at random on a calendar, besides which, you might find that when that date rolls around, you're still steeped in reasons why it may not be a wise idea to go ahead according to the plan.
Someone else told me a horror story about some poor LB wife who did the Plan B type stuff when her H had an affair with the town tramp. She lost her H, her house and her marriage in doing so, when it was only a matter of time before the H eventually realized just who he had hooked up with, but the damage was done.