He's the fella from the only friend couple they appeared to ever have - his name is James. They (the couple) featured on her stories and blog a few times and went to Mexico with them where the girl got really ill. I think they've split up too (before the Rackleys) as James has no photos of her on his Facebook at all. I can't find her surname so have been unable to Facebook stalk her and her Insta was private when I looked but I think her first name is Genevieve or something like that. This is her (posted on Ebru's Facebook account last month so they're obviously still pally)
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They definitely had a house that they sold before and I suspect it was probably in London, because I think that's where she is from, which is probably why they could afford the house in Kent (where Mr R is from)