so shortly after they graduated high school? we could throw a few things at them like one or both of them deciding not to do the long distance thing in college (she ended up going to school online because she didn't want to do the traditional college thing and preferred to do a little traveling), them fighting more because of that, and of course their friends pulling them in different directions after school ended. so we could say they started dating and the beginning of their junior year and it ended right after graduation? a year sounds good and significant for that age.