The ability to accept another's opinions and beliefs without having to agree with them or approve of them is important - critical in a relationship. Personally, I would explain that you need him to be able to accept that you will not always agree with his every thought. Sometimes you will, sometimes you won't. It's the nature of relationships.

If he can't accept that you will have your own unique opinions which may or may not match his, then he has a serious personal problem, which may be too much for you to overlook.

My husband and I make disagreement a veritable artform. Lol. We do it all the time and when we disagree on something, we hear the other out, logically argue why we disagree and often find a happy medium. Occasionally we feel so strongly one way or another that we have to take a breather on a topic or just let something go altogether. But all that takes practice, tolerance, and open-mindedness from both parties.

If one is too stubborn, the whole relationship can come to a screeching halt over a silly disagreement. Then no one's happy, so what's the point of the relationship?

If he can't be tolerant of dissension or alternately listen to your concerns about his close-mindedness at this stage of your relationship, consider how your future will look. Is it worth the long term?