If he tried to cancel this date they should just break up. It is very hard to hold into long distance relationship even with a healthy relationship. Trust is not the only issue... I hate the girls in the clinic if they hated men or interns why not reject them in the first place rather than making it harder for them to live their lives by treating them like slaves.
Wish someone will also update the other mangas of this author ヾ(❀╹◡╹)ノ~