Ok firstly ask yourself does this wife have any insecurities...
does she feel fat or frumpy, does she feel you are putting her down
or looking at her strangely lately??? Maybe just maybe you have
been neglecting her wishes for attension and affection to prove
your love for her.. Look i am a woman and i know men do tend to
neglect us occassionaly where we feel less important in their lives
so we say we are tired or just not in the mood or not tonight honey
you have garlic breath... come on your a man you tell us.... have
you been concentrating on other important things and not shown your
wife she is still attactive to you? ok in saying that here goes!!
if it was none of the above i hate to say it but MAYBE and i do say
MAYBE there is another man paying her all the attension she desires
some where else like at her work or at the kids school gee it could
even be an ex that has contacted her... she may just have her head
in the clouds as to someone else that makes her smile and feel
alive more than you... or she could be tired if you have children
she attend to every day! do u need a change of your appearance?
like a shave or a new out fit?? maybe shed a few kilo's by taking a
brisk walk at 6am every day... or does she to feel important and
more sercure in her life??? either way to get the spark back in
your marriage why not try a nice dinner at a restaurant just the
two of you (or cook one at home yourself) as a suprise see if that
gets her in the mood that night.... and if not i advice you ask her
whats up and should you both go get marriage couselling... GOOD
LUCK u poor guy! i hope every thing works out for you both.