If he writes stories and poetry about another woman then how can you believe he loves you?

I write erotic poetry sometimes, I have a friend's group where we all share poems with each other, We even write in pairs, the person who I'm always paired up with is just a friend and not at all an inspiration, we did it just last night. Poetry is not always written to, about, or for a certain person.

So I wouldn't automatically assume he's writing about another woman