HELP???? DOES SHE LIKE ME???

There is this girl at my school. I have her for one cl. She talks to me all the time in that cl cause i sit right next to her and sometimes shell even stop talking to someone even if theyre in the middle of a sentence if i say something to her. She seems to be touching me somehow all the time and she writes over my backpack and worsheets and stuff. We were watching a movie in cl one time and she scooted her desk almost right next to mine to supposedly see the movie cause someone was blocking her view supposedly. She talks to guys a lot but i havent seen her flirt with any guy like she does me. Should i at least get her number and start texting her. PLEASE HELP!!!!!