I hate this, I don't know if I'm falling for my best friend
That's rough, why do you feel like you are falling for her?
I do like her, but I'm not sure she feels the same about me.
If you want to pursue a romantic relationship with your friend, it is a good idea to broach the subject carefully and with caution. Your friend might not feel the same way and would prefer to keep things the way they are, so you need to be prepared for that.
It's just that she's a bit absent-minded these days, and she only talks to me when she needs my help.
If she is absentminded, there may be things going on with her life that are distracting her. That makes it more important than ever to sit her down and have a talk.