Can Sonia convince him to tell Rainie about his cancer?
Worried, Rainie suggests that Stuart see a doctor and later, Mick gives her flowers, to thank her for the advice she gave him about Linda.
But when Stuart asks her where the flowers are from, she lies and his suspicions grow that she is cheating. After spotting Stuart following Rainie, Sonia encourages him to go to a cancer support group before later finding him worse for wear.
The next day, as Stuart tries to apologise to Sonia, she tells him that she will tell the truth if someone asks about his behaviour.
In the market, Rainie explains to Mick her worries about Stuart and Mick offers to help her look for Vi. Seeing their conversation, Stuart takes it as confirmation that they are having an affair.
EastEnders continues Mondays, Tuesdays, Thursdays and Fridays on BBC One