Only one girlfriend in New York, but we don't have tie-in to indicate that that first break-up story was Echo in New York. The alternate postulation had the break-up in New York happening months, maybe as much as a year (or more) before Adrian set off for Wilmot, then having his next relationship end...wherever this branch of the Cavanaughs is from (we could really use an age and a hometown for Adrian at this point), in an even worse way than Echo getting swallowed by the New York Harem. Although again, Echo is Adrian's ex, why doesn't his name electrify her during the Interrogation of the Dunce? Have her mind and memory been completely wiped by more aggressive programming?
ETA--I must read posts more carefully.