Let her come to me or stand my ground to get her? Also, sometimes I feel jealous?

[A A]

Keeping this short but I've been talking to this girl for quite a while, we've been heavily flirtin/playful over phone and texting so I wanted to ask her out somewhere/meet up, although we've never met. She initiates half the contact.

She told me "Not until you play on snapchat and facetime i'm afraid x", which I understand so she feels safer, but she's seen pictures of me on Facebook and recently on Snapchat.

So I'm wanting to do facetime with her and ditch snapchat, because facetime is nearest to face to face communication whilst snapchat is some still image with a lousy caption.

Although, my main concern is refraining my jealousy. I always keep it to myself or post on forums like this to hide my insecurity to girls. It's just since she started using snapchat last week, at the top of her "best friends" list, there's some other guy there. They could be friends but I noticed that a few hours ago, on Twitter she favourited one of his tweets that he made 5 days ago.

I mean they could just be friends, but they don't seem to have any mutual friends and he lives near her area. And he seems to be a looker too.

But anyway, I do like the look of her and we click.. but my jealousy is tiring me lately. Any ideas to stop this?

More importantly, should I test the waters and let her come to me and initiate contact? Or should I carry on and stand my ground, i.e keep flirting, show her i'm interesting, etc and proceed with facetime in the hopes she'll consider meeting?

(Of course, if I get excuses after facetime I'll move on)
@ ILuvBoos.. - If you read the start of it, I did ask her out but she wanted to snapchat and facetime first

[ILuvBoost]

Just think about this man. While you're sitting back, casually flirting with this girl, this other guy is probably actively trying to set up dates. If she thinks that he is more serious about him moving things along with her than you are, then naturally she is going to go to him. Show some confidence and ask her out on a date. Here are your options. Option A: You don't ask her out, and she ends up with this other guy. B: You ask her out and she denies you. Or C: You ask her out and she accepts and you end up having a fighting chance.