Dennis,
I have a maltese (a little girl) who is "in love" with my guy. However,
when Mike and I first started seeing each other, I had a silky terrier
(male) who never had to share his mom with anyone. He barked at Michael all
the time. He especially got upset when Michael tried to kiss me, hug me,
etc. It took almost a year for him to get a grip. Michael tried ignoring,
talking, petting, etc. Nothing worked. Higgens barked; however that's a
bad as it got, so it was simply a disturbance and we lived with it. About t
the second year of our relationship, Higgens seemed to calm down about it,
though he still didn't like the kissing parts! Higs was 14 that year, and
died suddenly. Michael was devastated. He cried almost as much as I did.
So, you hang in there. I think male dogs may be more possessive of their
moms, just like male human children are. As for Lucy, she has Michael
wrapped around her little heart and vice versa; also much like little human
girls.
If you give this some time, the barking may become less frequent.
In the meantime, try to view it with a sense of humor if you can.
Good luck and remember it will be worth it. I have never had a
dog that's as truly affectionate as my maltese.
Cathy Brown