bhe, I believe you might be mistaken. People can develop feelings in a short time, especially if there is great chemistry and the personalities seem to mesh so well. When a breakup occurs, even if it was a short dating period, if one of the people involved feels (rightly or wrongly) that “this is the one,” it is VERY painful when it does not work out.
My husband told me he wanted to marry me by the time we had gone on our second date. He had dated a lot and knew what he was looking for, and apparently I was it(took me a little longer). Had I told him after that date that I didn’t want to continue seeing him, he would have been very upset. I have been on that end of a breakup, too, so I know what it feels like to get the “We need to talk,” talk.
How do you get past it? You just do. You cry your heart out and grieve for the death of the relationship (don’t let anyone tell you not to), and then YOU MOVE ON. There will come a time when you are in the RIGHT relationship with the right person (sometimes it is could even turn out to be that same person who broke it off, as the timing was off). When that happens, you will not think of this episode in your life as anything other than a part of what made you the person you are. I am sorry for the pain you are feeling and wish you to meet your TRUE zivug b’korov.