When Meat Loaf sang "I would do anything for love but I won't do that", what was "that"?

@JavaJim Yet he came up with another song that said "I'd lie for you and that's the truth", didn't he? Doesn't that contradict it?

@HeadGirl Different girl

@JavaJim I might have guessed. All these rock stars are the same. Two-timers, the lot of them.