I am unsure on to what it is your friend wants to know, since they already have an answer according to what you wrote.
Hello I have been asked by a friend to write a post here about whether or not there is a third party involved in her relationship some details they split up a week or so ago and they had some recent fights about the time when he cheated on her
This part here already says that he cheated on her. Unless if this is just a suspicion only.
My friend asked today 22/5 if there was a third party involved at the moment the result was hex 2 lines 1 and line 6
I would greatly appreciate if you could help her with this query
Given the information you already provided, I don't believe you even need to ask if there was a third party. Since you can only cheat if there was a third party involved. So by logic, they should already have their answer.
Unless if you have forgotten about something in what you wrote that would warrant even needing to check with the I Ching?