Don't worry. Woman are on to the fact you're shy. It's surprising how much they know about you before you even said 1 word. It's a woman's 6th sense thing. I doubt that this will have negative effects later on. Hold asking the number for when you:
A. Know her name
B. Can have conversation without the unpleasent silent pauzes
Why not ask the phone number now?
Well i'm thinking this one is a pretty girl. Usually asking a number go's rather corny and is mostly done with a stereotype pickupline when the person isz a stranger. Don't be like a million guys before you.
She's gotten these questions too much already to give you a chance to prove you're not like the rest.
What you do is when you meet her always at least greet. Don't share your lifestory but let her share hers. Woman are more talkers ... you should do the listening, at first anyways. Ofcourse you do answer her questions.
Also you don't know her name. It's best to ask in the middle of the next conversation. Why? Otherwise you might come on too smuthering.
When you're in the same area always give her the most attention. But watch it! Do not claim her if she doesn't give you the most attention.
During convo try to figure out her love situation (have b/f, looking for, just broke up, is in love with another and so on)
However do ask her phonenumber within a 2 week span max. This will improve you getting it or it being usefull. Why? It will give her the feeling of genuine intrest in her without it seeming desperate.
Anyways i hope this helps i could be very wrong i could be very right. It depends on the person and situation. For all i know she's a 'Date? Sure. What time? 18:30. Great!' kind of girl. Maybe someone else will give better advice.
For now good luck and tell us how it ends. I'm a real sucker for a good romantic story

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