I've been in the hobby 26 years. I was out for about 1 1/2 years. During that period, I had moved across country, taken a new job, gotten married, and was essentially broke. We had just enough money to see a movie once a week.
When money is tight, you don't get to spend all of the discretionary income on your hobby. That money must be shared equally. So it takes a little while before you have essentially twice as much money to spend as the hobby cost.
And then there might still be an issue with spending time apart. No might, there WILL be an issue.