Probably better than being married to a complete narist.
What is it felt like being married with someone who used to be a seminarist?
Be prepared to better understand some inconvenient truths.
It may prove to be educational for both of you.
I've known a couple of couples (!) where one member had retired from a religious order or a ministry. It can work out just fine. It probably depends on which direction the former seminarian aims his/her devotion.