In Simon's mind, there was nothing to forgive. Nothing Silvio did was out of malice. It wasn't as if people simply divulged everything about themselves at first meeting. Simon certainly has his troubles -- which Silvio helped him through, was still helping him through.

"It's a lot to take in," he murmured. "But thank you for telling me. For trusting me. If I can do anything to help..." When he's scared and alone, Simon meant.