Should I help my husband guarantee his lease?

My husband and I are separated but amicable. We are taking some time apart to work on some issues and do couples counselling. He needs a guarantor for his lease, and his own family won’t sign because they aren’t on good terms. My family and friends think it’s a mistake. I’m torn and really sad to see him struggle and stress.

If you were in my shoes, would you sign for him?