Does she like me or am I jumping to a conclusion?

I recently started talking to this girl who is the same age as me and about 2 hours away, we are both fifteen and we have been talking online. I was introduced to her by my friend who is a guy and they have known each other as friends for months longer than she has known me, yet she tends to talk to me more than she talks to him, does this mean anything or am i just being hopeful?

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We've only been friends for about a week, but we already have an inside joke with each other, we also talk a lot and i seem to be able to make her laugh a lot of the time, she also seems to trust me. We share a lot of the same interests as well, the one big problem is the distance between us.
Does she like me or am I jumping to a conclusion?
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