Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
At any rate the public, which usually saw better through the views and intentions of Pompeius than he did himself, could not be mistaken in thinking that at least with the death of the beautiful Julia-- who died in the bloom of womanhood in the autumn of 700 and was soon followed by her only child to the tomb--the personal relation between her father and her husband was broken up. Caesar attempted to re-establish the ties of affinity which fate had severed; he asked for himself the hand of the only daughter of Pompeius, and offered Octavia, his sister's grand-daughter, who was now his nearest relative, in marriage to his fellow-regent; but Pompeius left his daughter to her existing husband Faustus Sulla the son of the regent, and he himself married the daughter of Quintus Metellus Scipio.
The personal breach had unmistakeably begun, and it was Pompeius who drew back his hand. It was expected that a political breach would at once follow; but in this people were mistaken; in public affairs a collegiate understanding continued for a time to subsist. The reason was, that Caesar did not wish publicly to dissolve the relation before the subjugation of Gaul was accomplished, and Pompeius did not wish to dissolve it before the governing authorities and Italy should be wholly reduced under his power by his investiture with the dictatorship.
It is singular, but yet readily admits of explanation, that the regents under these circumstances supported each other; Pompeius after the disaster of Aduatuca in the winter of 700 handed over one of his Italian legions that were dismissed on furlough by way of loan to Caesar; on the other hand Caesar granted his consent and his moral support to Pompeius in the repressive measures which the latter took against the stubborn republican opposition.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/5-09-crassus-joint-rulers.asp?pg=20