I've tried it myself and there's videos on youtube, but I've also seen people say it doesn't work like that for them.
I'm one of those people - whatever I say, it's always a break-up. Which is kind of crazy since at that point you really could not foresee his strong reaction and it should have been possible to talk it out. Making him drink AFTER the confession though should 100% lead to a break-up, because you should have known better. It's really upside-down IMO.