He certainly is cheating:
There are many poems that reveal the feelings of a broken hearted victim and the most eloquent story is of Narcissus from the Greek Mythology
Narcissus rejected the affection of those who loved him and one of his victims prayed for him to fall in love and never receive back love, as a way of retribution. What interesting is that the tale emphasizes on his insensitivity towards other people, and his unaware self lenience irregardless of others' feelings.
As a reply the prayer, when looking into a swamp of water, he suddenly falls in love with his reflection. Longing to embrace it, the reflection soon fades away as a flower.
For the rejected victim, his kind an end would be a reassuring one, and in this moment exist three people who would like to see someone suffer, and their joy would be complete if someone would fade away, maybe into a kind of foliage or eaten alive.
The male peacock stirs up his feathers so that he courts his possible mate, and surprisingly the female replies in the same way. Generally, this rule is also valid in the case of men infidelity: if his clothes, personal hygiene and accuracy seem to alter. When observing the absence of the wedding ring or lipstick marks on his collar, you must be aware because this are also signs of cheating.
When infidelity exists, it is noticeable if the husband looks for a new haircut, renewing its wardrobe in order to create a new attitude suited for a new affair.
When asking "Is my husband cheating?", some problems gave occurred and it is required a special sense, a sixth sense that allows women to intuit her husband deeds and this feeling is valid. A closer look will soon disclose changes in style, manner and behavior and possible nervousness, that will confirm or call off doubts.
He might be Faithful
It is true,a drastic change in appearance may be determined by infidelity, but there are also other reasons besides betrayal.
Someone's look might change due to vanity, but also envy which nowadays it is directly related with the each person's physical aspect, youth, beauty and strength.
Modern democracy encourages the belief that everyone is capable to fallow and accomplish own dreams through personal transformation and rebirth of ourselves. Since a long time ago it has been shown that physical appearance is directly linked and influences moral worth, both internally and externally, as in the fairy tales of Cinderella or the Ugly Duckling.
Finally, in the 20th century the Viennesse psychologist Alfred Adler has brought precious evidence regarding the connection between physical appearance and mental health, a harmony that must be maintained so that our self esteem and ego to be at a normal level.
If your man is possesses this attitude and behavior, it does not mean that he is positively cheating, but suffering from a condition that most people do, and you must try to help him retrieve his personal identity and recover his place in this world .