From Longman Dictionary of Contemporary Englishgo all the way (with somebody)go all the way (with somebody)to have sex with someone → way
Examples from the Corpus
go all the way (with somebody)• But it was touch and go all the way.• A lower court forgave the debt, but the case went all the way to the Supreme Court.• The chair went all the way back, folded out, so his feet were out.• Imagine going all the way to Inverness for a pint of milk ... Maybe that was for the cat, too.• She is very tough mentally and determined and should go all the way to a medal.• The sun went all the way down and I was standing in the purple darkness.• If you went all the way across the Lake of Dreams you'd end up in the Lake of Death. 