DEAR ABBY: My wife and I were visiting our children and grandson, “Rhett,” age 24. Rhett is a college student who lives at home. He had his girlfriend, “Peggy,” who lives in another town, at the house for the weekend.

Rhett and Peggy retired to his room early in the evening. When we saw them at breakfast, they were, basically, uncommunicative. Shortly after, they went to the backyard and immediately climbed into the hammock, where they lay like tightly wound dishrags for the next two hours until it was time for us to leave. Our son and his wife did not awaken them to say goodbye, s...

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