How long should it take to fall out of love?

I was in a situation recently where I got very confused about my feelings for someone. We mutually confessed but nothing else happened, and since that confession I’ve slowly started losing any attraction to them — romantically, anyway. I’d like to think we’re still good friends 💜

I read something recently about the longer you remain passive about a crush or the like, the deeper you fall. I wonder if that means the less time you leave the quicker the feelings cease...?

Either way, how long does everyone think it should take to fall out of love? ((Sorry if the question doesn’t make sense ^^; )) Is this normal or am I just being insensitive?

Thanks in advance!

- L x