so its very interesting on how QofCups picks up 3rd party information, once I asked her about a POI and another person - she started to describe his feelings for her and said something very specific about her. I was quite surprised with what she was describing till she said something very specific about her which was not her at all,it was me. so I think its important to get validations from her. she typically gives them on her own.
if you have the name of the 3rd party, I would just ask "what is going on between POI and 3rd party"
sometimes when I just give the name of the 3rd party and ask about their feelings, she picks up on 3rd parties on her own(if there are any).
though I must mention, once I asked about this guy and at that time I didn't know he was married and she still didn't pick up on his wife. though later I did find out that theirs was a status quo marriage and they were living together only because of some financial burdens.
hope this helps.