<human>: I hate that I'm like this. Every single time I message this girl I have an internal struggle trying to psyche myself up just to press send. She's pretty shy, and so I always have to message first. I know she wants to talk to me though, cause she'll send massive long paragraphs to me, and the conversation flows for hours once it gets going. The other day we were reminiscing about school and as I thought the conversation was gonna end she said 'keep thinking of more things I love talking about this'. She also keeps asking me if I'm going to the same parties as her, and there's been a lot of flirty undertones getting thrown in to things. When I'm talking to her and it's all going well like that I wonder why I act so stupid about messaging her first. 

Like logically I know I have nothing to fear in messaging her. We get along well, we clearly enjoy talking to each other, etc. But sometimes my confidence fluctuates and I start second guessing myself and overthinking. I start wondering if she's just replying to be polite, or if it's worth trying cause she's 'out of my league' (according to my friends, I don't believe in leagues but it still gets to me), and it makes it hard. It's stopped me from messaging her some days, and she probably doesn't find that inconsistency and lack of confidence attractive at all.

But how do I stop being like this? I don't get where the nerves come from, I really don't. There's no reason for them, I fully get how ridiculous I'm being, and yet every time I start a conversation I'm sitting there hovering my finger over the send button for like 10 minutes trying to force myself to hit send. Sometimes I don't get that far and don't do anything and feel like shit about myself for not doing it which just makes things even worse. How do I get into a good mindset of just being able to talk to this girl regularly without having these massive nerves bubble up every damn time?

Can you condense the text into a few key points?
<bot>: Feel insanely nervous every time I initiate a conversation with this girl even though it's pretty clear she enjoys talking to me. How can I ditch the nerves and become more comfortable with this?