I assume you mean rebounding from a relationship that's just ended. My general thought is that the rebounding feelings would likely be very intense. However, I haven't read anything about it. My opinion is that it would be best to give the new relationship time to see what happens. We can't really know someone until a reasonable amount of time has passed. What's a reasonable time? Hmmm. I'm thinking at least 6 months or more. Also, you might get some good insights from friends or relatives, if you feel comfortable asking.