I've worked with several clients, both in couples and individual therapy, where one partner has very different political views than the other and it doesn't cause tension in the relationship. (verilymag.com)
Throughout scripture, there is a unique tension in the relationship between the body and soul. (relevantmagazine.com)
It's also very common to experience tension in a relationship after the «honeymoon phase» has ended. (eddinscounseling.com)