I'm pretty sure they met during Molly's Birthday celebrations in mid/late May (as I said elsewhere, Gio's flatmate followed Molly's sister around the same time Maura followed Gio/his flatmate)..
... I'm guessing they might have decided to put a public stamp on the relationship, due to Maura flying home to Ireland today (guessing she'll be there for up to a month. Probably depends on how quickly she's cleared for covid, although I suppose there's likely a fast track test/clear schedule for media workers).
I have less faith in this lasting than Chris..or even Curtis , largely because they are both fiery enough that their arguments could crumble a building ... but then, I suppose the make-up sex would be good.
I'm not convinced Maura will be happy with his work schedule/potential lack of attention either. Even if he's paired with someone on Strictly that he doesn't want to date
, Strictly will take up a big chunk of his time from October to December and then he has a solid 3 month tour from March to May (and he'll likely be training for that in January & February).
Still, it's beneficial for both of them media wise. Keeps Gio in the spotlight for his tour with Anton, keeps Maura in the headlines during the new Love Island (although given the lack of impact with this years show, she probably didn't have much to worry about). It'll keep the press happy as well.. if they can last long enough to make it to a few red carpet events.