3. It literally takes nothing for you to make her blush. She goes red in the face even if you just simply look at her and smile. It only means you must be doing something right.
4. She's always teasing you with other girls. It's her way of knowing your 'type' in girls and if she fits in. It could also be because she's probably still in denial, trying to convince herself that she's really not into you. It's common for female friends to tease you with other girls but there's definitely something more to it if she's going over the top, linking you with others.