It is hardly likely that because you both have broken off that you do not have any feelings left for one another.
But yes, you are clear of your feelings but are not clear if your ex too has feelings.
Watch out for those mutual feelings.
Your ex is around Do you see your ex around at places where you hang around? Or has your ex stopped frequenting those places because these are the places you also frequent and they do not wish to bump into you.
If they are around then it's mutual.
Your ex says "Hi" when around Does your ex say "Hi" to you when you are around at the same time? If your ex does say a "Hi", it shows that there are mutual feelings still.
But if ex did not bother to say "Hi" or anything else then you could take it that it's not mutual.
Your ex contacts you You have called your ex a couple of times but has your ex ever tried to contact you? They may have been courteous and cordial when answering you but the point is, have they attempted to call.
If so, then the feelings are mutual.
Your ex asks for you to be invited If there's something on at your ex's friend's house does your ex ask for you too to be invited? If they take interest to have you too invited then the feelings are mutual.
But if it makes no difference or they're unconcerned then the story is different.
Your ex asks you to dance If you're at the same party does your ex ask you to dance with them, or are they picking up other partners? This will leave you in a bit of doubt as to whether they are doing it intentionally to make you jealous or actually to avoid you.
Your ex hunts you out Does your ex hunt you out if they know you too are invited or likely to be present at a gathering? Or if you're not to be seen around does your ex call to find out if all is well with you? Either of these will tell you that the feelings are mutual.
Your ex is concerned for you When your ex shows feelings of concern for you then you will know that their feelings are mutual.
Your ex enquires about you either directly or through friends.
They just want to know that you are fine because the feelings are mutual.