Ray is one of five suspects in the frame in the storyline, which will see Kat enjoying a fling with a mystery man throughout the summer.
As the Queen Vic's chef, Ray would be perfectly placed to pursue landlady Kat (Jessie Wallace). However, that would mean cheating on his girlfriend Kim Fox.
Venn, pondering the possibility, told Inside Soap: "Kat's a saucy minx, and what man wouldn't want to get involved with her?
"Ray is a loyal, caring father - but we all have our dark sides. There's a lot the audience hasn't seen yet, put it that way."
Tameka Empson, who plays Kim, added that there would be fireworks if the storyline twist went ahead.
She said: "It would be handbags and nails at dawn. Kim and Kat are good friends, so would Kat really go there? I'm playing detective in-between takes, but I'm still none the wiser."
Kat's affair storyline will begin next week and play out on screen until the autumn.