I take it a  face value. I assume everyone is trying to be a good Catholic, Christian, etc, (in her/his own personal and spiritual life). We are all so complex, really a mystery to ourselves, ultimately known only to God. So I let God be the judge of a person's fidelity, choices (or if the person is married, his or her spouse). But trying to figure out a person's moral or inner life is like trying to figure out a person's bone shape or guise or appearance or the person's heart valve from his/her discarded shirt. We are left with externals, only. We don't know a person's soul, inner life, really. Only God does.  Christ's warns us repeatedly not to judge another person. Tells us to be merciful, forgiving and compassionate. If Gingrich is cheating, he is in antagonism with his own spiritual life, soul life, marital life, and that would be tragic. I  wouldn't condemn him, but pray for him and his spouse and let God judge, mercifully. Only God know the antagonisms within his complexity