1. Monogamy. If both partners do not want the same thing, it is not a good match. In order for a monogamous or an open relationship to work, both people need to be in agreement and have the same desire in terms of their level of commitment. Compromising on this issue will only lead to enormous pain and conflict. I’ve explored the pros and cons of polyamory in a different column — it’s an undertaking that requires 100% consensus from all involved.

2. Marriage. If marriage is important to you, you should not give up on this, no matter how much you love your partner. Staying in a relationship where you have to give up this level of commitment will lead to anger and resentment. It will always feel as if the other person is getting “their way,” or worse, denying you of something you truly and deeply want.

4. Core Values. Core values are defining values that guide your life and behaviours. You should not be with someone who wants you to compromise your morals and values. Of course what you value as core is up to you — for some, a religious or political alignment is an absolute requirement, for others, faith and voting habits aren’t the biggest reflection of their belief system and other traits more clearly express them. This is one of those “you know it when you see it” things: If someone’s basic humanity is in disagreement from the parts of yourself you feel most solid about, that’s a good indication it might not work.

5. Character. People can improve their communication, become more insightful, and learn new behaviours, but they cannot learn character. You cannot change someone’s nature. Building off of the core values, character is essentially the face they put out into the world. Think of values as the substance that informs who a person is, and then their character is the outward expression of that identity. It’s a package deal, and if it’s off-putting or doesn’t feel like a fit: It never will be.

If you are in a relationship with someone that is pushing you on one of these five issues, you may want to reconsider the relationship. Compromising on any of these five issues is likely to lead to problems and hurt the longevity of your relationship, not to mention your own confidence in who you are and what you most love about yourself. And that should never be up for debate.