In 1981, Teng met Beau Kuok, a Malaysian businessman and son of a multi-billionaire Robert Kuok. They were engaged in 1982, but Teng called off the engagement due to prenuptial agreements which stipulated that she had to quit and sever all ties with the entertainment industry, as well as fully disclose her biography and all her past relationships in writing. Teresa was still willing to accept the second and third conditions, only to keep the chance to release her own record. However, the Guo family declined her request, and the marriage was canceled.