Here is a well written article, not by me, about how men can be there for their partners.
I would like to add that for men to support their partners while they are “falling apart” the partner must communicate what their wants and needs are. It is best to communicate these things when you are “whole” or before you “fall apart”. People can hear each other better when not in crisis. It’s also easier to communicate your needs before you become exhausted or in panic.