It's pretty common for people your age to tease or poke fun at someone they actually like, even if it's not in a romantic way. Sometimes, teasing can be a way to show that you feel comfortable with someone or to bond with your friends. It might also be a way of showing that you notice or appreciate certain traits about her, even if you don't express it directly.
However, it's important to remember that teasing can sometimes hurt feelings, even if it's meant to be playful. You might want to consider how she feels about the jokes you make. If you think they might be bothering her, it could be a good idea to tone it down a bit or find other ways to interact with her that feel friendlier.
Ultimately, it’s all about finding a balance between playful interaction and being respectful of someone's feelings. Communication is key, even in friendships!