Is a rebound relationship the same as if she had a crush? No contact?

We heard about the no contact rule, not as i am waiting for something but i wanted to know what if she has a crush on someone? Is that worse than a rebound relationship or what?
Coz i had gone cold with her for a few months until she got a crush on someone and blamed me because i was neglecting.. which is true my fault..

But i apologized and showed her that i had things going on and how much i love her and going to change..
she's open for me trying to show her my love and said to try to bring back her feelings fore but i told her i can't since u have a crush.
. than i went no contact after that and its been 20 days.. she called and texted me if something happened to me because im not picking the phone.. and i ignored that..

Im not waiting im just asking if the crush is worse than a rebound
Is a rebound relationship the same as if she had a crush? No contact?
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