Popping the question and committing yourself to another for "as long as you both shall live" is a serious endeavor. Needless to say, you should take your time to figure out whether who you are with is truly the right person. Interestingly, though, there is no consensus as to how much time it takes to decide. According to a study conducted by Priceonomics, most Americans decide relatively quickly, with a majority dating their significant other for 3 years at most before getting engaged.