Young Romance #76

A man schemes to break up his older sister Cynthia's relationship with Roy by inviting Roy to New York and introducing him to Joan, an attractive woman, hoping Roy will leave Cynthia for her. The plan initially succeeds when Roy is charmed by Joan and goes out with her, but Roy ultimately realizes he loves Cynthia and rejects Joan's advances. Roy confesses his brief infidelity to Cynthia, who initially forgives him but later insists they break up, deciding she cannot trust him despite his declarations of love.