We talk a lot face to face, but don't text much?

Why could this be happening? When we see each other we have great conversations, we laugh a lot and make good eye contact, we have a love for movies so we borrow each others' dvds, we broke the touch barrier so we hug each other a lot but when it comes to texting, we have conversations sometimes but other times she either doesn't reply or seems annoyed but when we see each other again, she mentions stuff I texted about and she elaborates on that, what's going on? Am I annoying her when I text her? I don't really mention it to her but it kinda bugs me. According to a friend, she asked him for my number and he told her he couldn't give it to her because he would be "betraying my trust" but that instead he would give me hers, so I assumed maybe she was a bit interested. any ideas?

We talk a lot face to face, but don't text much?
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