Because of how sudden Sarah's move had been, coupled with the fact that she was on top of him, there wasn't much Jay could do in this case.
Of course, it wasn't as if he was desperately trying to get out of this situation either, and the reason for this was because he wanted to know exactly what the mage was planning to do.
While it might seem that the actions of the two of them were rash, there were actually several factors behind them.
Along with James, they had been friends since they were children, with Jay being the connector between the mage and the pugilist, starting a relationship that would last even until now.
However, as Jay and Sarah grew older, they reached a point where they both noticed that it wasn't really just friendship that they felt for each other, but something more complicated.
Because of this, there were several situations where both the esper and the mage made advances on each other without really knowing what they wanted.
