In May, Jamie and Eleanor were spotted walking her dog Bruce together through Notting Hill in London before stopping off for a spot of lunch.
The sighting of the pair sparked romance rumours, but Jamie - who is currently in Los Angeles filming MIC's brand new spin-off show - said they are just "buddies".
Speaking to The Sun, McVitie's heir Jamie said: "She's great, she's cool, she's amazing, but we're just buddies. I'm just her dog walker. But man, she really is a great girl."
Eleanor and One Direction star Louis split in March this year after around four years together.
Meanwhile, on the last series of MIC, Jamie's romance with Jess Woodley was up in the air. Jamie revealed he fancied her but Jess was slightly hesitant to get involved in a relationship.
Jamie told Reveal about Jess: We'll see what happens. We're not going out. Everyone thinks we're going out but we're not at the moment. I mean, I don't think we are going out...well, I'm pretty sure, otherwise it would be slightly confusing if we were! She's super great, super sweet and just adorable."
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