I'm rusty with my writing, but I'll give it a shot. I think, with some tweaking, it could be a country song, or a punk rock song. I'm leaning more toward punk rock hate.
Shoulda never married you
You ate my food and stole my soul
Living off me was your number one goal
You were looking for the easy life
Day by day, adding to my strifeYou're batshit crazy,
Not to mention, lazyShoulda never married you
You were looking for a free ride
You never were by my sideTake your shit and shove it up your ass
You sponged off me and claimed to be high classShoulda never married you
Acted like you gave a damn
Sitting on the couch, with your crackers and jam
You're the lowest piece of shit
And now you're angry that I'm gone
Get your revenge
I'll get mine in a song