I have incredible respect for Rav Miller. It’s important to say here that Daas Torah is not universal on this topic.
When I got married, my mashgiach took my aside and asked me if we had spoken with a relationship counselor. I told him that everything was going great with the shidduch, but he told me that his Rosh Yeshiva once gave him this advice, and now he gives it over to his talmidim. Shortly, before the wedding, go to a good frum counselor – and he had a few that he recommended. Speak out your fears, your concerns, your hopes and dreams. Learn to work on your communications from the start, and you will continue growing.
Most importantly, these weren’t just people who gave eitzos. They had both degrees and were real yarei shamayim. This isn’t not something to play around with.
A few years later, I was having a hard day and wasn’t happy with how I spoke to my wife. I consulted my mashgiach, and he asked me if we had gone back to the counselor. I had completely forgotten! We now make it a point to go every few years for a “tune up”, especially when things are going well. A relationship requires constant nurturing. Not just dates and walks together, but working on your relationship itself. These sessions aren’t a walk in the park and they can run upwards of $100 a pop, but the atmosphere at home is so much better afterwards.