When my parents got married, my dad was 17, my mom was 19. Happily married (VERY happily) to this day (30 yrs. tomorrow). So, like everyone's saying, it totally depends. On average, probably not the best idea, because most 19 y/o people are not grown up enough to know what they really want. Some are. Some are that grown-up at a much earlier age. Some people (like my dad) are forced to grow up at a VERY early age, due to family tragedy or other problems (like alcoholism in the family). Do these people miss out on their youthful years? Arguably, yes. I say arguably because no one says you can't have the days of your youth back at a later time. My parents only recently (after both kids are done with college, out for good, married, with kids of their own, etc..) started doing all the things people dream about doing when they are young. Only thing is, they HAVE MONEY to do it all now! Works out good for them. It all depends on the individual. Also, though, I'm gonna have to say again, is this is about your sis marrying that guy again, get over it. You're gonna give yourself an ulcer.
Ricky
DesignDawg