It worked well and we never had any problems - I suggest that if you're in a relationship, however, you're a team and making a move like this is something that shouldn't go without consideration..! That being said, each have your own money accounts that your wage goes into. Before you move in, organise a joint account that $x (determined above) + 5-10% of each of your wage goes into each week and just pump that amount in each week. This way, you'll have money aside there for when the bills arrive and when there's a 'lull' in bill periods, you can use the rest for home furnishings, going out to dinner etc and not ever worry about 'who has to pay'

If she's working, I'd expect her to pay a section unless my wage was freakin awesome, in which case I'd be happy to provide 100% for her.