In the UK that would not be uncommon but in the USA rather rare. I do not think Roy Moore did this. If he did he is stupid. I do not think he did nor do I think he is stupid.
When I write notes to my friends in the UK if it is addressed to both husband and wife I often sign it with "all our love" meaning from me and my wife. I lived their for several years. If it is just to the husband I sign the note as "always your friend."
I don’t believe he wrote it either. The comma after ‘love’ is right by the R in Roy..someone put his name there. The writing above his supposed signature is different than the signature writing...all bogus bs. Let alone all the things pointed out at the gateway pundit link...