Not even a single thing can stay under the wrap for too long in the showbiz world of Bollywood. Via paparazzi or social media, the rumors or mushy things cooking up inside the industry always find a way to come out. While controversies save them like their shadow, they get saved by the grace of God when it comes to their love affairs. In past, we have witnessed that some Bollywood couples hide their relationship so perfectly that it can even confuse Sherlock Holmes. Love stories of these celebrities are proof that not every love is destined to have a 'happily ever after'. Shedding light on some undercover relationship, here we bring you a list of top 10 Bollywood couples you probably didn't even know were a thing way back then:

1. Arjun Kapoor and Arpita Khan: Arpita is now happily married to Ayush Sharma but in past, she shared a serious relationship with Bollywood actor Arjun Kapoor for more than 2 years. Arjun once in an interview revealed that it was his first serious relationship and he was completely shattered when they broke up.

2. Priyanka Chopra and Herman Baweja: The couple started dating during the filming of their first movie together but broke up even before they complete the shooting of their second movie together. In past, Herman revealed that he was the reason behind their break-up as he failed to give her the time she deserved.

3. Shahid Kapoor and Sania Mirza: In the past, both Shahid and Sania has denied their dating rumors, but Sania spilled some tea when she made her first appearance on KWK. She said she doesn’t remember anything about it because “it was such a long time ago”.

4. Deepika Padukone and Yuvraj Singh: Deepika Padukone and Yuvraj Singh became rumoured couple in 2008 and some media reports even suggested that they considered getting married but things went off between the two and they decided to take their separate ways.

5. Sushmita Sen and Randeep Hooda: Sushmita and Randeep began dating in 2004 and broke up in 2007. Their relationship was serious, and Randeep has spoken about developing a close bond with Sushmita's daughter Reneé over the course of their relationship.

6. Aamir Khan and Pooja Bhatt: The duo fall in love during the shoot of their first movie together titled Dil Hai Ke Manta Nahi. But at that time Aamir was married to ex-wife Reena Dutta and that’s why they didn’t took their affair forward. Post their breakup, they haven’t been the most cordial, but Pooja claims that they share a “love-hate relationship”.

7. Jacqueline Fernandez and Sajid Khan: Sajid and Jacqueline dated for three years before breaking up in 2013. Sajid was bitter about the breakup and made this sexist statement in an interview to TOI – “When you don’t have a woman in your life, you don’t have someone constantly nagging you, so you end up working better and are more focused.”

8. Abhishek Bachchan and Dipannita Sharma: Abhishek was allegedly in love with Dipannita Sharma, a model post his relationship with Karishma Kapoor. But they soon broke up after he got close to Aishwarya on the set of guru.

9. Ranveer – Anushka: According to reports, their relationships were ruined due to jealousy. On the one hand, Anushka was receiving big-budget films at the time, while Ranveer was only starting out. Their relationship eventually fell apart.

10. Ranbir Kapoor and Avantika Mallik: Avantika Malik was his first love interest while they were both teenagers. They dated for a long time before Ranbir made his Bollywood debut. Avantika, who is now married to actor Imran Khan, was in a 5-year relationship with Ranbir.