Susceptible or Impervious?

A relationship matures and endures as one or both spouses become susceptible to growth.

Impervious individuals resist responsibility.

Susceptible spouses bounce ideas off of one another, solicit feedback and continually take accountability.

Impervious marrieds resist change like steel against flint.

A couple saved two thousand dollars in home remodeling by bouncing ideas off of each other.

They were open to new ideas and concepts, thinking a great idea would come by being susceptible to other's ideas.

 Are you becoming susceptible (porous) or impervious?