The pair are currently an item both on and off screen as their characters Theresa McQueen and Will Savage recently embarked on a relationship, while they are also dating in real life.
Porter told Gossip Monthly: "Me and James have been dating a while and it is the first time I have dated a co-star. I've never actually admitted that we have been going out!
"Things are going really well and he is a great guy, I can't shut up about him! It is a little weird working with him on set. We will be doing a scene and then afterwards it is like, 'So do you want to hang out after this?'
"I don't know if I'd get jealous of him kissing another co-star for work - I've never seen him do it yet. I'd like to say no because it is work, but when it happens I'll probably go mad!"
Pictured: Jorgie Porter and James Atherton as Theresa and Will in Hollyoaks.
Porter also insisted that she currently has no plans to bow out from her Hollyoaks role.
"At the moment I am really happy at Hollyoaks," she said. "It makes me laugh and keeps me happy and I don't want to leave that."
> Read more Hollyoaks news and spoilers
Watch Hollyoaks' teaser video for this week's episodes below: