Am I obligated to honor financial promises I made to my NOW EX Girlfriend?

Obligations are rent, educational and living expenses I was paying for her while dating. We ended the relationship mutually but I still love her. She cannot afford these expenses but it seems like she feels that she's entitled to them. She only calls me when she has problems, and is usually too busy to see or speak with me. She also refuses to ask for the help because she thinks she doesnt have to.