Am I jealous or is he a flirt?

I'm trying to find the answer to this question and it's really hard
for me, believe me!
I truly love my husband with whom we've been married for 8 years, the
first 3 of which we spent living separately in different countries.
Now we are already together. In the beginning everything was perfect
and I even feared sharingthis with others because people say "it's too
good to last".
So, I've noticed recently that when we are in a company with
handsomemen my husband is constantly around me and he is very kind and
affectionate to me. I find this normal and I'm quite pleased with it.
I considerthis the right attitude to a wife. I like showing my
feelings towards him in front of people and I'm very happy when they
notice it. The problem is that when we are in a company with
attractive women he changes abruptly – he stops touching me at all,
even keeps a distance, or if I show in some way or another that he is
my beloved husband he is unpleasantly surprised and stands as if
frozen, while his attitude to the other women is more than friendly.
There have been cases when he has spoken to a woman for about 10-15
minutes and haven't even looked at me meanwhile. (to say nothing of
including me in the conversation!). Sometimes I hesitated on leaving
the place in orderto see if he will notice myabsence. I think this
will probably last at least an hour or until he sees some handsome guy
around.
Whenever he meets a woman he will greet her with a hug, in which I
find nothing bad, but after that he will study her from head to toe
while talking to her. Another issue is that when a woman calls him on
the phone he becomes so enthusiastic that you may think this is the
happiest day in his life. However when I call him he gets so awfully
indifferent. And this happens when I'm tellinghim his favorite team
haswon an important game.
After this description of the situation (not mentioning many other
similar cases and the bad thing is unpleasant memories get more and
more) I'm asking you to help me see if I'm too jealous.
I will appreciate this a lotbecause right now I'm onthe verge of a divorce.