During his meeting, you have to pick "I would advise you against telling women you find the idea of having a wife limiting and a bother" and head to the training room after. If you have the correct version to eventually friendzone him, he will be seen yelling at a servant which awards +5 courage and manipulation (important to end up reforming him in the end!).
To prevent being rivals with him, you will have to reach for a high 450 persuasion but I hope this helps solve your problem!