Do not have expectations; just tell your children you are there for them. Remember that you are communicating with your children in order to let them know you love them. Do not expect anything in return. Children often sound distant when they are with the other parent. They can feel shy about being affectionate with you in front of your ex, as they may believe they are betraying one parent by telling the other they love him/her. Don’t be offended if they don’t engage with you much at a given moment. Also, explain to them when they are with you that it’s okay to love both parents.