On the contrary, they are built on a solid foundation of trust, and the rest is up to you.
Don’t be afraid to ask questions about your relationships. Stay open and honest. It's not about being a good listener (we all suck at that sometimes). It's about being a good communicator.
Of course, keep expectations reasonable because there will be arguments, ups and downs, and hurdles, but overall, your relationship should not be stressful.
Read this article if you have doubts about your relationship.