1. The correct title for the drama is "I'll Only Love You for the Rest of My Life" in English.

2. The English abbreviation for the title is "Lifetime Love" or simply "LLYFOML."

3. The sentence structure you provided, "I'll love you alone for my rest life," is not grammatically correct. It should be revised to "I will love you alone for the rest of my life" for proper English syntax.