I feel the need to question my friends relationship.
Why do you feel the need to question your friends relationship?
I need to clarify a few things to see if the relationship is stable.
While your concern for you friend is admirable, be careful that you aren't getting too involved in their love life. They might find it disrespectful and intrusive. If you have concerns, be cautious and tread lightly with them so you don't hurt the friendship.
If you are going to tell me I'm in the wrong, I'm going to call you close minded.
I'm not necessarily telling you that you are in the wrong. You should approach it with caution and make sure you don't seem like you're coming off very negatively. Communicating this the right way will be very beneficial to you.