Their relationship 'got/turned nasty' soon after they were married.
That 'nasty' old man yelled at me just for stepping on his lawn!
a violent movie with a lot of 'nasty' [='bad, dirty'] language
(..) So this is headquarters. What are you doing here? We have a little problem, girls. It's called Lloyd Buttinger. - What about him? - This nasty rumor got started... and now these girls are signing a petition to have him fired. Wow. - What's your point, Dana? - Our point is... (..)1996 Foxfire