Things may have cooled down between on and off couple Selena Gomez and Justin Bieber, but there is something that the "Baby" singer is not going to like. A recent Instagram pic of Selena Gomez, rumored to be taken at Niall Horan's house has surfaced on the internet. The photo has raised questions about Nelena hookup amid Jelena reunion rumors.

According to Hollywood Life, American actress and Niall Horan's best friend Samantha Droke posted a picture of Selena Gomez on photo sharing Web site Instagram on March 27. The throwback Thursday photo has "Come and Get It" singer posing with Samantha Droke at what is said to be One Direction hearthrob Niall Horan's house.

The Instagram photo was posted with a caption: "That time in London Town - so much love for this one #lilsis #TBT #missu."

As soon as the picture was posted, fans guessed it was Niall Horan's house and flooded the post with comments. The picture has aroused speculation and has sparked Nelena romance rumors. The photo surfaced amid Selena Gomez's reunion with her long-time boyfriend and singer star Justin Bieber. It is now being speculated if Selena Gomez hooked up with Niall Horan.

Selena Gomez and Niall Horan were reportedly enjoying a date on Feb. 15 in London. It was said that she was seeing One Direction's lead singer "in order to make Justin jealous." Rumor has it that things became pretty hot between Selena and Niall in an attempt to "get back" at Justin, according to another report by Hollywood Life based on In Touch magazine's report.

"She made sure to amp up her sexy outfit since she knew he [Justin Bieber] would see the photos," revealed a source to In Touch as quoted by the Web site.

"They made out and had a great time," added the source. The insider also revealed that Selena thought Niall Horan is a "sweet and a good guy," and she would want to go on a date with him again.

Meanwhile, Selena Gomez and Justin Bieber are rumored to be planning a family together. An insider told Life & Style magazine that Justin Bieber "can't wait to have a beautiful wife and little kids running around." Furthermore, the report reveals he has "always told her he'd love to marry her {Selena Gomez}."

What do you think did Selena Gomez hookup with One Direction singer Niall Horan? Or is she only about her alleged love interest Justin Bieber?

For more news on Justin Bieber, Selena Gomez and Niall Horan, read below:

Nelena Romance: 'Smitten' Niall Horan and Selena Gomez Plan Romantic Vacation to U.S.; Justin Bieber Posts Selena's Photo on Instagram?

Justin Bieber and Selena Gomez: Ready to Get Married and Have Kids