Do they know they are lying?? I think each one is different, some know they are lying but sure they are doing a good job. others do not know. Just my opinion.
Do they love us?? Same thing, some don't know, some do, and prob some don't or can't love.
These are impossible questions in my opinion.
However we see and know of many non drinkers that do not love. Some marriages they just stay for the kids, or don't want to give up lifestyle etc. etc.. I have accepted that there isn't an answer. but I so hate it, that there isn't any way to know for sure. If anyone knows how to find out I hope they answer.
Wishin the Best for you always clancy46