The pair do have a lively relationship and Josie admitted that they do argue and row, however the best part of their fall outs is always the making up.
‘We only fall out so much so we can enjoy the making up,’ Josie told Fabulous.
‘I trust him completely now. I know he’d never cheat on me.’
That bit makes no sense whatsoever

If they had a true and loving relationship, there would be no need for constant rows just to make up afterwards. They would already be loved up. So that just reads to me like a pack of lies. But the pair of them always seemed/probably still are, economical with the truth when it suited/s anyway.