"When saying 'yes' to your scene partner try to say yes in as many ways as possible. It’s obviously best to believe that what your scene partner says is true. But beyond that it can be helpful to believe your scene partner is sincere, that they meant to say this thing to you, and that the way they said is important. This is why scenes where people like each other are so much easier, there’s an underlying 'yes, these two people SHOULD be hanging out!' The more ways you say yes, the more supported your scene partner will feel and the more momentum your scene will have."
Check out Justin Anderson in ADX and in Good & Evil at Megawatt