My girlfriend is hiding me from her ex. What to do?

uh wow sounds like she is playing you straight up! she shouldnt be hiding you. who cares if she got an abortion recently(dont take this as me sounding like a bad person) but i mean that still has no meaning to not let her ex know she is with someone new. the only thing i can tell you is she still has ties on with her ex. there is no just friends...she just cant let go of him. i would sit down and talk with her and explain you dont care that them two are friends but he needs to know you are in her life now and has a limitation of what he needs to say/do. thats nice of him being supportive but you can be just as well. if this behavior doesnt stop in a couple weeks i would leave her and find someone better.