My brother was dating this girl years ago, they talked about marriage, even had an idea of when they wanted to get married, but like all couples, that was just talk. They went out for I'd say 5 years, on again and off again, and finally he broke it off one winter.
Like six months after he dumped her, she got married to some other dude. And then like two months after that she was cheating on her husband. And about six months after that the girl wound up divorced.
And six months after that, her and my brother wound up getting back together to hook up, have sex, talk and so on. It didnt last, I'd say they stayed together for about a month or so.
And Finally about 8 months after that, this girl is pregnant. The girl is pregnant with my brothers kid.
So all i'm saying is, if some girl goes off and marries some other dude right after you break up, I'd stay clear. It'll only cause problems that you dont' even want to get involved with.
And every freaking person on this planet, male and female, young and old, say, "But It'll never happen to me."
Put it this way, would you want to chance getting this girl pregnant? because if you really dont like her that much, you are in for a long long life.
And girls that go off and get married to some other dude a few months after breaking up, usually are looking to get knocked up.