Zayn was snapped entering Gigi's New York City apartment on Wednesday morning.
According to an exclusive witness, the singer got there around 10 AM and stayed there all day and night!
And not to mention that 22-year-old couldn't contain her smile as she entered her apartment building on Tuesday night, could it because she was excited to see her ex?
So what's going on? As OK! readers know the couple announced they were splitting up after over two years of dating last month.
"Gigi and I had an incredibly meaningful, loving and fun relationship and I have a huge amount of respect and adoration for Gigi as a woman and a friend," Zayn wrote on Twitter. "She has such an incredible soul. I'm grateful to all of our fans for respecting this difficult decision and our privacy at this time."
His ex took to Twitter as well, writing: "Breakup statements often seem impersonal because there is really no way to put into words what two people experience together over a few years .. not only in the relationship, but in life in general. I'm forever grateful for the love, time, and life lessons that Z and I shared."
Do you want Zayn and Gigi to get back together? Sound off in the comments section.