Most Helpful Guy
Your best bet is to ask her. How does she feel about you? What does she look for in a relationship? What are her expectations? Being open and honest is the best way to build trust and establish a healthy relationship. If she doesn't want a romantic relationship, accept this and if you genuinely like her, stay friends. If she does, then ask her out.
Try asking her what she likes in a person and what she wants out of a relationship. (Conversation, sex, or just to see how things go.) Give her a hint (for me you could simply suggest a movie with a sweet song. When it plays watch her body language and gauge her reaction. If she's gets closer, then she may feel comfortable and you can try cuddling.) The only for sure way is to ask. I wish you both well.