How to check widget like?

Question

Classmates

Hello!
We use ShareWidget with:
OK.CONNECT.insertShareWidget('ok_shareWidget', ' https://our URL"
{width:80,height:35,st:'straight',sz:30,ck:1,nc:1 }
");
Question: How can we check if a person liked this link or not?
We know there are 'message' or 'onmessage' callbacks for this, but they only fire within the session when the like happened.
How to check after the fact, i.e. in subsequent sessions?
Thank you!