The takeaway is that the couple seems to still be together both as co-workers and as lovers.
If Stefani’s kids paying tribute to Shelton’s tattoo is not enough to keep a couple together, I do not know what is.
Note that Gwen Stefani’s response did not actually deny that she and Blake Shelton have called off their wedding, in the same way she didn’t confirm that it is still happening.
Unfortunate as it may be, I do not think fans are any closer to an answer on that front if Stefani’s reply will be her go-to stance in the future.