Dear Ms Wise, I intend to move in with my boyfriend, but he earns $200,000 and I earn much less. Should we split our living expenses 50/50 or is there a more equitable way to do it that acknowledges the differences in our incomes?

The wisdom: David Currie, financial adviser and founder of Wealthy Self, suggests the most equitable approach is a proportional split based on the income earned by each person, rather than a 50/50 split.