The businessman, played by Adam Woodyatt, asks former stripper Mandy Salter to marry him in an upcoming episode.
A BBC source told The Sunday Mirror: "In true soap style no-one knows whether they will make it down the aisle."
Actress Nicola Stapleton reprised her role as Mandy in August, 17 years after her last appearance in Walford.
Ahead of her return, she teased that her character would have a big impact on Ian - who found Mandy at a strip club.
Over 8.3 million viewers tuned in to see Mandy cause chaos for Ian as she made her EastEnders comeback.