She’s definitely into you!
You're not imagining things, this girl likes you. She goes out of her way to spend time with you, her body language opens up when you are around, and the little details show she is paying attention. Whether it's teasing you, mirroring your behavior, or lighting up at your messages, the signs are crystal clear. She is into you, and this is your green light to make a move.
She probably likes you.
The signs are leaning in your favor. She laughs at your jokes, remembers small details about you, and seems to enjoy being in your space. The signals aren't totally clear, but she also might just be a little shy. A lot of girls wait for the guy to take the first step. Odds are good she feels something, but you will need to show her you're interested to find out for sure.
You might be in the friendzone.
She clearly like you as a person...but the signals feel more friendly than romantic. It sounds like she's comfortable joking with you, talking about her life, and hanging out, but there isn't much of a romantic spark. You are someone she trusts and enjoys being around. Maybe some day it could transform into something more, but right now she probably sees you as a friend.
She probably doesn’t like you.
Listen dude, this girl does not like you. It sounds like she is distant in conversation, avoids one-on-one time, or does not show much investment in your interactions. It isn't necessarily personal. Sometimes the spark just isn't there. The good news is that now you have clarity, and you're free to put your energy and attention towards a girl who is more receptive to it.