Coronation Street's Daniel Osbourne (Rob Mallard) has been concerning his family with his erratic behaviour as he struggles to get over the death of his wife Sinead Tinker (Katie McGlynn).

Fans know that Sinead died of cancer last year, and Daniel has been giving sex worker Nicky Wheatley (Kimberley Hart Simpson) her clothes and asking him to cook for her as he pretends she is still alive.

The pair are set to grow even closer in coming weeks, as they sleep together for the first time, and he realises he has developed feelings for her.

Not only that, he becomes determined to help her leave her escort work for a fresh start, resolving to get her the money she needs, realising he can't bear the thought of her being with other men.

But his family grow concerned as they warn him over becoming attached to Nicky, and Daniel brushes them off and tells them they have nothing to worry about.

Adam Barlow (Sam Robertson) in particular is horrified when he learns the pair have slept together, but Daniel refuses to listen and asks Nicky to be with him properly.

Fans have already started speculating that Daniel and Nicky's relationship could grow dangerous as he has started showing controlling and jealous behaviour, especially when walking in on her with another client.

Nicky seemed worried about herself after being forced into meeting his family, clearly realising that she could be getting in over her head with Daniel.

As Daniel gets himself into serious trouble by stealing money from Geoff to try and fund Nicky's new life, but could he turn dangerous as she pushes him away?

According to Tombola, Coronation Street is the soap with the highest number of relationships ending in death.

A whopping 33 marriages have ended in death since the soap started back in 1960.

In comparison, Emmerdale has had 20 marriages end in tragedy, while EastEnders has had just 16.

Could Daniel end up snapping as his obsession with Nicky grows to a dangerous level?

Fans were previously convinced that Geoff had used Nicky as one of his chosen escorts after Yasmeen discovered he was paying for them, but have the pair slept together?

Looks like time is running out for Nicky...

Coronation Street continues on Monday at 7.30pm on ITV.