What??? Cutesy nicknames but not married?? How can this be a problem? At the very most, an RFE/I later to clarify. I wouldn’t slow anything down, at the most, a simple clarification.
The biggie is, are you officially married or not, with documentation, sounds like not. My beneficiary calls me ‘husband’ all the time, zero worries for me. I didn’t sent copies of those texts though.
Anyway, I wouldn’t slow anything if sent, clarification at the most.