The Great Gatsby, she was presumably engaged

I'd like to know if in the following passage from the chapter Four of The Great Gatsby "presumably" means "apparently" or rather "rumour had it that", or "allegedly":

By the next autumn she was gay again, gay as ever. She had a debut after the Armistice, and in February she was presumably engaged to a man from New Orleans. In June she married Tom Buchanan of Chicago...

Thank you.