The cynic in me says that they put them together to give a 'youthful' look to hopefully appeal to a particular demographic. The even bigger cynic in me says they did it in the hope of starting 'romance' rumours and thus generating publicity
Absolutely, and thats why Laura Whitmore was so vocal about it, especially considering Gio had recently broken up with her friend. I never saw her complaints against him - more against the producers. When she said that she wasn't comfortable with her partner, how could she have been when a) he'd been seeing her mate, but also b) the show were doing everything they possibly could to try and spark speculation about them.
I think thats why from the very beginning Dianne was so extraverted about seeing Bobby as a little brother, because she didn't want those rumours to start and affect her relationship with Joe. And I think she was absolutely right.
The problem this year was that Bobby should have been paired with either Luba or Nadiya for the height. But Nadiya is very "mumsy" for want of a better word (and I don't mean that disrespectfully) - they needed a partnership where the youthful exuberance could match each other (hence Dianne). Really, Bobby should have been with Luba, and Adam with Dianne,.