Reply To: Two phone numbers, two best friends
The fact that you talked to both girls does not put you in a bad light. They will probably just see it as a funny coincidence.
If they do talk and girl #2 mentions it to you, you can always joke it off that the first girl hit on you and made you uncomfortable and you only gave her your number because you felt bad for her, even though both of you know it’s just a joke.
You really have nothing to lose by texting girl #2 and getting her out on a date. If for some reason she is turned off, you just won’t hear back from her. Nothing lost.