The hymen can heal after one sexual encounter if the women abstains from sex and intensive physical activities thereafter. Couldn't believe it until I heard it from a physician. Ain't life grand with all its uncertainties.
Increased looseness is natural when a woman is in her thirties irrespective of whether she has had children or not as human muscles weaken naturally with age. Multiple births also obviously increase laxity. Even during a woman's prime, as familiarity increases, shit becomes stale from a male perspective. You can't have it all in life! If you have a good friend as a wife, that matters more than than a sex life that will inevitably lose its appeal considering how time and childbirth are not kind on the fairer sex.