Troubled daddy?

my husband had a really hard time bonding with both our babies my 3 yr old boy cried or pooped on him. now they are like siamese twins when my hubby gets home.And my 2 yr old girl still doesn't care to be around him too much. she gives him one kiss a day and thats at bed time tthey dont really bond much more then that he just needsa to keep trying to bond in spite of the crying