7. Each of the princes gave an entertainment that day to his comrades, who had exercised under his command. Perseus being invited to supper by Demetrius, refused; kind hospitality and youthful merriment led both to excess in wine. Thereupon mention was made of the mock engagement, and numerous remarks were thrown out against the antagonists in such a manner as not to spare even the leaders themselves. To learn these expressions, a spy was sent from among the guests of Perseus; but not conducting himself with sufficient caution, he was detected by some young men who happened to come out of the banqueting-room, and severely beaten. Demetrius, knowing nothing of this matter, said, “Why do we not go to my brother, join with him in merriment, and by our frankness and gaiety assuage his resentment, if any, arising from the engagement, as yet remains?” All with one accord cried out that they would attend him, except those who were afraid of the immediate revenge of the spy that had been beaten by them. When Demetrius pressed these also, they concealed swords under their clothes, with which they might defend themselves if any violence should be offered. In the case of domestic discord, nothing that is concealed can remain so. Both houses were full of spies and traitors. An informer ran on before to Perseus, and told him, that four young men, armed with swords, were coming with Demetrius. Though the reason was evident, (for he had heard that his guest had been beaten by them,) yet, for the purpose of blackening the matter, he ordered his gate to be locked, and from the upper part of the house and the windows facing the street, he drives away the revellers, as if they were come to murder him, from the entrance to the gate. Demetrius flushed with wine, having for a little exclaimed loudly at his being shut out, returns home to his own feast entirely ignorant of the meaning of the whole proceeding.