January Jones has insisted she is not dating Nick Viall.

The 40-year-old actress was romantically linked to the former 'Bachelor' star last month after sources claimed the pair hit it off when they met on the set of 'The Late Late Show with James Corden' last year, but the 'Mad Men' star has insisted the rumours couldn't be further from the truth.

Speaking to 'Entertainment Tonight', January said: ''He's a friend of mine. He's super sweet. No, I'm single. But, he's a friend of mine and tells me lots of inside scoops.''

Previously, insiders had reported last month that the actress and the reality star, 37, had been seeing one another for around two months.

They claimed: ''They've been dating for about two months. She went on 'The Late Show' in ­mid-November and said Nick had reached out to her and tried to get her to lip-sync battle with him. She declined, but then he asked her out to a drink and she accepted. They've been seeing each other since.''

It comes after January - who is mother to son Xander, six - previously claimed it was difficult to have an active sex life as a single mother.

She said: ''It limits your sex life for sure. Because you can't bring someone home when your kid's coming into the room. Honestly, my son turns up in the middle of the night and asks for a massage, and then I fall asleep. I imagine that's what marriage is like.''

And although she is single right now, January wouldn't rule out marriage in the future, but after a ''series of disappointments'', she doesn't think it'll happen for her.

She said: ''I thought I would marry the boyfriend I was with in my early 20s and we would have loads of babies. But then he cheated on me, and I was like, 'Oh'. After a series of disappointments, I've just gotten more and more comfortable with myself, where I don't need a partner to be happy. I was thinking about this in the car the other day: I don't know that I'd want to get married unless I met the love of my life and it was important to him. Give me the ring but keep the paperwork.''