He was only moderately well off, and had more debts than hairs on his head; perhaps for a son-in-law of Herr Ellrich's that was a venial offense.

He was also a common libertine, whose excesses were more like those of a pork-butcher than of a cultivated man.

His companions were not disinclined for little amorous adventures--a joke with a pretty seamstress or restaurant waitress were their capital offenses.

But the manner in which Pechlar carried on his amours was such as did not commend itself to either the easygoing or cautious among the officers.
Wilhelm clearly saw that Pechlar did not love Loulou--he was probably incapable of loving, and only wanted her dowry.

Without a thought of jealousy, and out of compassion for an inexperienced and guileless creature who was dear to him, he thought it his duty to warn her before she sullied herself by becoming bound to such a man.