I watched the Suze Orman show when it was on and this kind of issue came up a lot. Below is what she always suggested.
Partner #1 makes $7k/month.
Partner #2 makes $3k/month.
Household expenses total $3k/month.
In the case above, Suze would suggest that the bills be split 70/30, rather than 50/50. This way, each partner/spouse is responsible for an equal
percentage of the bills rather than an equal
dollar amount. They don’t earn equal dollar amounts, so they shouldn’t pay equal dollar amounts.
After all, paying $1,500 worth of bills (a 50/50 split) drains the $3k earner a lot more, percentage-wise, than it does the $7k earner.
However, she needs seriously evaluate his earning potential and decide if this is something that she can live with....cause I could not.