Can someone explain these dogs behaviors?

Ok so myself and my ex girlfriend shared a Siberian husky who now soly lives with me but when me and her lived together he would go absolutely nuts if I was walking away when she was walking him or if he seen me coming home from work while she was walking him. He would pull like crazy to get to me. She got a puppy bernadoodle towards the end of the relationship that now lives with her but when I we was living together the bernadoodle did the same thing actually one night she was walking both and they both drug her down pulling trying to get to me.

Can someone explain these dogs behaviors?
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