How & why can sexual intentions be harmful to others?

MN 19 says: > And as I remained thus heedful, ardent, & resolute, thinking imbued > with sensuality arose in me. I discerned that 'Thinking imbued with > sensuality has arisen in me; and that leads to my own affliction or to > the affliction of others or to the affliction of both. It obstructs > discernment, promotes vexation, & does not lead to Nibbana.' While I gain the impression the macho blokey male Buddhist internet scene appears to have men hoping to score jhana or Nibbana, which they imagine is a higher form of pornographic sexual orgasm, in this respect, it seems MN 19 is clear when it says sensuality is harmful to "oneself", in that sensual & sexual thoughts hinder jhana & Nibbana. But why are sensual or sexual thoughts & intentions harmful to "others", as stated on MN 19?