The shocking love affair between Indian actors Priyanka Chopra and Shahrukh Khan is an open secret in Bollywood much like the Amitabh Bachchan and Rekha fiasco. No one knows the exact timeline of when the affair started and ended, but people have speculated that it began in 2006 when Khan and Chopra starred in their film "Don" together, and ended in 2012. Before I begin, let me explain why their affair is considered scandalous:
Shahrukh Khan is one of the most popular actors in India, and has been frequently referred to as the Baadshah (King) of Bollywood. He has also been married to his wife Gauri since 1991, and they have three children together; Aryan (born in 1997), Suhana (born in 2000), and AbRam (born in 2013). Shahrukh and Gauri, who is an interior designer and producer, are a power couple and were seen as two people who were in a perfect marriage. They projected the image of a devoted and happy family together, and there weren't any credible cheating rumors about him prior to this. Priyanka Chopra was seen as the sexy "it girl" in Bollywood and also had a sultry femme fatale image similar to that of Angelina Jolie. This all contributed to making the affair salacious in the media.
(Shahrukh, Gauri, and their children)
1. Shahrukh flirts with Priyanka at an event for Miss World 2000
This occurred in 2000 and long before their affair began, but one can see Khan's attraction to Chopra as he hypothetically proposed to her.
2. Shahrukh Khan sings "Marry Me" to Priyanka in public
Now, this happened during the affair. Khan sings "Marry Me" to Chopra at an awards show, and you can see how awkward everyone in the audience feels.
3. Priyanka giggles and plays with her hair when an interviewer mentions Shahrukh's name
(Starts at 1:18)
Priyanka sits down for an interview with director Karan Johar on his show "Koffee With Karan", and is joined by her then boyfriend Shahid Kapoor (who she cheated on with Shahrukh). Johar talks about how Priyanka's demeanor changes whenever she hears Shahrukh Khan's name, while Chopra bashfully laughs and starts playing with her hair.
Priyanka dropped a bombshell last year in an interview on a show called "Dirty Laundry". Chopra talked about keeping a jacket belonging to one of her exes, and guess who was caught once wearing the same clothing? This was seen as a confirmation of the affair.
5. Shahrukh's response to Priyanka and Nick Jonas' engagement
This is what Khan reportedly had to say when asked about Priyanka's engagement to Nick-
"Even I am getting married. I will send you an invite. My card will come to the reception and also, do come for the Mehendi."
He seems to be suggesting that he doesn't believe that they will actually get married.
ETA: I'll add one more moment. Thanks to milfordacademy for bringing this to my attention:
6. Inappropriate behavior at a Berlin party
Shahrukh and Priyanka attended a party for their film "Don 2" in Berlin, and Priyanka gets a little too close by putting her pinky in Khan's pocket.
Source: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11