DD and Partner are separated but still living in same house at present.
They will share custody of their two boys when he eventually moves out.
DD is trying to get 6 year old to sleep through in his own bed. He usually wakes through night and wants to come into her or partners bed.
Partner consistently, picks sleeping child out of bed and puts him in bed with him as he doesn't want to be woken through the night. DD has told him she will always get up and he should leave son in his own bed. Partner refuses and continues to bring him into his bed.
AIBU thinking this is unacceptable and somewhat strange behaviour?