<p>I agree with you ucb about the need for separation, but if the OP’s son makes it clear that he wants to be away from this woman and she infringes then that is a different issue. I’ve known plenty of couples that are oil and water and really can’t be around each other. My H had a particularly volatile relationship prior to meeting me which I heard about from his friends when i started dating him. Hard for me to believe until i witnessed others with volatile relationships. As I said, unless the OP’s son has a anger management issue this situation might never occur again in his life. It seems a shame to “give up” on this college if they can work out a situation where the OPs son and this woman aren’t in close proximity where they would be alone. </p>