That was not how he expected that to go. He's not sure how he expected it differently- but it was. And rather than simply take it-

"It was a catalyst for me to come, Solus-!"

He takes a step forward, then another, uncertain as to how far he should try and follow.

"And...I thought it best that I admit as much now, rather than stay as I plan to do regardless and have you think I was deliberately trying to deceive-!"