If I were a betting man I’d lean on the likelihood that the Welcome to Plathville star has moved on from this relationship, however, if only because the caption on her statement just felt very restrained and platonic.
Perhaps more insight on that relationship is coming in Season 2, and the truth will be revealed soon.
It’s worth mentioning that it’s not uncommon to see the star of a TLC series scrub their social media of relevant pictures that may spoil plots ahead of a new season, so there is a chance that Moriah Plath and Max Kallschmidt are still together.