Unless there was a felony involved if you still bear this bad of a grudge after this long then you have a problem.
The guy wants his 15 minutes of fame.
Or, Cruz is a truly miserable person with whom this person was forced to live with for nearly a year. It probably ruined his first year of college, which should have been a wonderful time of his life. I have known a few people in my life that were dreadful people, and if any of them suddenly surfaced, all those old feelings would come flooding back. And if one of those people were running for president, I would be on the warpath too.
It is the students at “ both Harvard and Princeton” who knew him. They could not stand the creep.