Fact: There is no reason to wait.
When most people say they want to wait until they’re married to buy their first home, what they’re actually struggling with are two distinct issues: First, would it be better to wait until they had two incomes?
And second, will my future spouse like the home I choose? If marriage is not in your future, then neither of these issues matter and buying is the right decision. Puttting off the decision to buy the right home is never the solution. Getting into the game as soon as possible is.