Depends on how things ended.
If she broke up with you, then go for it. It's going to be a non-committal :boink: . She's either looking for some action or throwing some sympathy :boink: your way.
If you broke up with her, and she's still into you then don't. This situation means that you have a class-5 clinger on your hands, and you don't want any of that mess.