Complex sentence: Johan is humiliated as he finds the reunion a jest, with Veronica and the baron's guests laughing at his sincere and passionate display of love, incredulous, he declares I thank you, the limit has finally been transgressed.
Split into simpler sentences: Johan is humiliated as he finds the reunion a jest, with Veronica and the baron's guests laughing at his sincere, passionate display of love. Incredulous, he declares, I thank you, the limit has finally been transgressed.