My daughter is 23 and she met and started dating her first boyfriend on Sept 9th.  Last monday she became very ill with mouth sores and thoat infection.  This tuesday she was test for mono and it came back positive.  She has lived a pretty sheltered life and I am wondering what the chances are that she contacted mono from this boy.  If so would he not show signs.

Summarized question: How to treat mononucleosis?