After rejecting a woman who is a close friend, how much time should you wait before you start dating other women, so it won't hurt her?

So I'm going to reject someone I consider a close friend today due to certain reasons, history etc. Its not like I'm in love with any other women but just wondering that she'll be hurt if she does see my dating someone else.

So what amount of time would you consider appropriate before i start dating again?

After rejecting a woman who is a close friend, how much time should you wait before you start dating other women, so it won't hurt her?
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