I had something like this happening to me some years ago, at Suvv airport. They told me kinda the same, i had already been there for over a year on re-entries (yeah good old times ^^).
But his main concern, after a while of chatting and explaining that im married here, he only cared about how i can fincance myself.
Luckily i had lots of reciepts with me. German bank, credit card transfers, Western Union transfers etc etc. So he saw i didnt work here and let me in again.
Didnt work out like that for long anymore though, after 2 more re-entries i got a red stamp, saying "no more" for 1 year or something.
So yeah, i guess it can happen.
Sorry for my interesting name. Still awating change from Thaivisa migration.