Since his return to the cobbles, Todd has been on a mission to cause havoc wherever he goes and splitting up Marcus and Maria has been number one on his list.
In behind-the-scenes footage, Langley explained: "Not a lot is happening for him around Weatherfield so I think he is getting a little bit bored and I think it is about time for him to cause some trouble.
"(This week) it's Todd's birthday so he is having a nice dinner in the Bistro, and he has got his eye on someone.
"Todd would feel like it is a bit of a challenge to bag Marcus, nice bit of fun to try and get Marcus back on the other side.
"Obviously Marcus is with Maria and he is dedicated to her so he is very reluctant to Todd's advances."
But Todd is as persistent as ever and soon they find themselves alone outside the Bistro.
Todd is about to make his move, only to be interrupted by his mum Eileen.
""Eileen kind of cottons on to the fact that Todd has got Marcus in his sights, and she is not very happy," said Langley.
"I think Todd is a little bit jealous of Maria and Marcus leaving the area and getting a nice house for themselves and having a nice life. I don't think he wants them to have a nice life.
"I think Marcus better be careful because Todd has got him in his sights, so Marcus better watch out."
Coronation Street airs on UTV Monday, Wednesday and Friday from 7.30pm.