Go with heart or head?

Ok so I was in a downward slope for 20 years in a marriage. Started seeing my g/f 4 years ago. We fell in love an I filed for a divorce. Not necessarily because of her but she was the prize at the end of the tunnel for sure. I left the house 11/16, eventually rented a Condo on the river, sunsets were gorgeous! But just before g/f was going to move in full time, it started getting hard to talk to her AND the wife changed 180 degrees.. between hormones and what the Church was saying was wrong about marriage. And tge hormones brought her out of a 20 year depression.
My mind convinced me to move back home. My heart is still with the g/f for the most part. But the wife hasn't really had a chance to change the heart but has potiental. Now as a guy, the stuff an comfort is important to me, with the g/f it would be a few years before I could get back to a lifestyle I was comfortable with....
So after all that, heart or head?