The uncomfortable (or even tense) terms upon which two parties co-exist when circumstances, rather than choice, either force them together, prevent them from separating or both.
That's my next-door neighbor. When the power went out after the '04 hurricane we had tolerationship for a few days because I had a barbeque grill and she had a generator.
Love and Tolerate is a term commonly used by Bronies ( the older male group of people who watch My little pony: friendship is magic) as a way to show contempt. It is often used in places where violent terms would normally be used.