You should not consider getting married before one year. It will take you that long to just get away from everything being novel with this person and past the puppy love. You should not continue dating someone if you're not ready to marry them after three years. By then nothing is novel and if you aren't sure by then she ain't the one. The doesn't mean you must get married on day 1,096. But somewhere between one and two years you should figure out if this is someone you just like or someone you want as your wife, and then your engagement to be married should be that, a reasonable period to plan your wedding and merging of lives, not a forever period just calling yourself something other than dating but not married, but also not a zero period where no thought into how your lives will change has been made. So date somewhere between one and two years. Then be engaged for somewhere between six months and little over a year. So you wife her up by roughly three years or you don't actually want her.