This is how I stopped dating school girls:

She came to my place in a school uniform, looked into my eyes and said, “Sweetheart, I have missed my periods.” That’s when I fainted and woke up in a hospital. I overheard her telling the nurse that, “I didn’t know he cared so much about my school  life, all I wanted to tell him was that, I had missed my periods for Maths and English, *(so that I could find time for him)*

but he fainted before I could finish.”