How Justin Beiber Got Revenge On Selena For Dating Niall From 1D

#1 Niall from 1D and Selena were caught kissing at Jenna Dewan-Tatum’s birthday celebration.

The two were spotted on the dance floor kissing, and since that moment, people can't help but wonder if the two are starting to become serious about each other.

#2Additionally, many new photos of Niall with Selena have been surfacing on the internet as of late.

The two were even caught holding hands after the Jingle Ball at the Staples Center.

But when Justin Bieber began to notice that the two were getting close?

#3 He seemed to have a hard time accepting it.

In fact, he appeared to be quite shook up by the news that his former girlfriend has moved on.

#4 Justin's reaction and response to Niall and Selena.

Lately, he's been posting throwback photos of when he and Selena were in relationship.

#5 And perhaps in an attempt to prove something...

Justin also began posting pictures of himself with lots of hot girls.

#6 And on Dec. 8, he hit on this random hottie on Instagram.

He captioned his photo "Omg Who is this!!" and recruited his fans to help him track her.

#7 In the past, Justin has expressed interested in getting back together with Selena.

Which is probably why he's reacting the way he is.

He posted to Instagram a quote from a Katy Perry song that seems to sum up his feelings, "Ur hot then ur cold ur yes then ur no."