Speaking to Digital Spy, the actor revealed that Rob hopes to "put a bit of a smile" on Stella's face following her split with love cheat Karl Munro.
Baylis said: "Well, I'm sure that any hot-blooded male out there would probably agree that she is a hot lady! There's a cheeky glint in her eye that he's latched onto - he definitely finds that attractive.
"It's purely the fact that he does think Stella is very hot. There's no boundaries for Rob where women are concerned. Even though he's been spending a bit of time with Eva, he's up for having a bit of fun elsewhere."
However, Baylis remained coy on whether Stella (Michelle Collins) will reciprocate Rob's advances, adding: "It's not an outright refusal - it's just a bit of teasing and a bit of flirting that's going on.
"Rob also wants to put a bit of a smile on Stella's face, because he knows exactly what's been going on with Karl.
"It's not necessarily harmless fun, but he's definitely working to cheer her up a bit."