Sometimes, romantic relationship works as other relationships too.
it's definitely have times that your partner refuse to discuss the problems of both of you.
Question: How to bring up a sensitive issue with your partner?
SHort Answer provided by following article:
Invite your partner into a safe conversation with you about the issue.
"By understanding what is going on for our partners in their reluctance to address a topic, we can better empathize with them."
Three questions to ask yourself when your partner refuse to discuss:
Is he/she feeling safe to discuss about it?
Is he/she ready to discuss about it?
Is this how he/she used to solve problem?
Basically, just put yourself in his or her place, and see how it feels.
Then, you might realize the solution is just a piece of cake.
"Sometimes, as the saying goes, soft words can win hard hearts."