What are the chances me and my ex will get back together?

We've been talking since october, she got a new bf in february, but when we are hanging out together, she beats me up and she laughs. Maybe I'm just going on false pretenses but, I sometimes think she throws subtle signals at me that she still has feelings towards me. Like, she beats me, ill hold her hands so she can't hit me, and she wont pull away, ill notice a some hair near her, out of complete reaction, i'll move it away from her mouth, and she won't pull away. When we watch tv, she sits close to me but not as to where she's latlyong on me, but enough to where either our arms or bodies are slightly touching...im just really confused, could I possibly get my ex back?