Dating

Would it be a bad move to go for her best friend if she rejected me?

For context, I liked this girl (girl A for reference) for a while and I thought she liked me back too.

Unfortunately, I was too slow and didn’t manage to get there before someone else. We were never official or admitted feelings.

Now I’ve been friends with her friend (girl B) for a while before I knew girl A. Me and girl B always had a good vibe so I’m curious to get to know her a bit better.

Just to clarify, this is not to get back at girl A as I genuinely want to try with girl B. They just happen to be really good friends.
Would it be a bad move to go for her best friend if she rejected me?
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