Msd is not that much expressive sometimes but he loves raina so much. They are like brothers. When ziva was born sakshi called raina to told msd that he has become a father because msd had not a phone with him.. Mahi called raina in his wedding secretly and raina wore mahi's clothes in mahi's wedding thats like their bond is. Precious.. Even ziva and raina's daughter gracia are bff