Moira was left devastated in February as her husband John died in hospital following a horrific road accident. She has since struggled to cope without him.
However, Robb told PA: "I've done my bit of crying now. I've cried a lot for John.
"It would be nice to have some happy times for Moira - it's nice to be happy!"
Emmerdale's series producer Stuart Blackburn recently hinted that there are "fun" scenes on the way for Moira, but warned that her upcoming behaviour "may not be entirely appropriate".
Robb, pondering Moira's future, added: "Who knows. They don't tell me anything. And actually, the things that they come up with I don't want to know. I just read the page and go and do it."
Emmerdale airs weeknights on ITV1.