after reading thesexynun's reply, yikes. there's definitely something more going on. but yeah...cheating is never the answer.
i myself always found fleshlights and fake pussies weird. i rather use my hands or wait for a woman than rubber detached genitals.
but i'm an odd one anyhow. :P
sounds like the spark is gone.
this is why i cannot see myself getting married. same person for years. i can see how it would be mundane.
my only suggestion is be more romantic, learn new sex techniques, or help her with chores more often. that's like the ultimate form of foreplay to married women/women with kids i have noticed. :P