Because according to People, a "longtime" is 11 months. The Bachelor/ette are my guilty pleasures, and I just saw that a former contestant, AshLee Frazier, got married to her boyfriend of 11 months.
Now, I have no problem with people getting married after 11 months or 6 months or 2 months or whatever of dating, but I certainly wouldn't consider 11 months to be "longtime." I would think it'd have to be at least two years or longer before I'd consider it "longtime."
http://people.com/celebrity/bachelor-alum-ashlee-frazier-is-married-stunning-ceremony-pictures/