It's wrong to get between two peoples relationships.
Jen has a friend with a partner that seems like a bit of a jerk.
Jen wants to support her friend.
Jen stays out of it and wishes her friend the best with her relationship.
Jen focuses on everything wrong with the partner to encourage them to break up.
Jen's friend is grateful she has such a good friend.
Jen's friend breaks up with a partner who is actually good for her overall.