The trio are preparing to take to the stage for the first live show of the series on Saturday night.
The singer's brothers Kyle and Jay have revealed they've had to get protective over their younger sister's romantic life.
Btw friends, watch the X factor UK because this guy is gonna win it' (sic).
Spencer has already experienced some success in the States and appeared on chat shows in a bid to launch a singing career.
The X Factor 2016 winner has been leaving flirty messages on the Love Island 2017 star's Instagram page.
The pair were also seen hanging out at the Oxford Street Christmas lights switch-on ceremony in central London this week.