While some click with their step-parents straight away, others want nothing to do with them.
An 18-year-old have been left feeling 'second best' after his mum's fiancé forced him out of his childhood home with his pet dog in tow.
Venting to Reddit, he explained how his soon-to-be step-dad is "severely allergic" to dogs - and wouldn't be able to live in the same house as one.