I have been with the same person for the last 5 years, and I get asked this question A LOT. What makes matters worse is that for this past Valentine's Day, my s/o gave me a beautiful ring as a gift...and people are constantly asking me, "is that an engagement ring...OMGZ ARE YOU GETTING MARRIED??!"
...which I find really odd, considering I am about six months shy of my 20th birthday.
Usually I'm like, "Geez, can I finish my undergraduate degree first?" I'm not even 20, I'm thinking about getting my cap and gown and getting out of undergrad, NOT getting a wedding gown!