Ever since singers Selena Gomez and Justin Bieber began dating, she has been hated by devoted Bieber fans, but on Saturday, Twitter fans started a trending topic called Stop Selena Hate, asking that others respect the singers' relationship.

Bieber, a teen heartthrob, recently celebrated his 18th birthday and received a special gift from Usher and his manager, Scooter Braun: a Fisker Karma. It is an electric luxury car worth more than  $100,000.

Gomez, 19, also took to Twitter to celebrate her boyfriend's big day, tweeting, Happy birthday to my best friend in the whole world!!!!

The Disney star has been snapped on numerous occasions getting pretty cozy with Bieber, sharing kisses, foot rubs and canoodling. Many death threats were thrown in her direction last year when she was spotted kissing Bieber in Hawaii. Ever since the relationship between the two went public, Bieber fans have launched a hate campaign against the singer.

Gomez recently had an interview with Baltimore radio station Z104.8, where she spoke about the hate she has received from her boyfriend's fans, admitting that It's a little odd.

But I understand it completely, she said, as reported by Hollywood Life. It's amazing to me to see how many passionate fans there are. You've just got to think of the fans first, and that's OK.

Google search the term Selena Gomez Hate and among some of the things you will find are YouTube videos Why I Hate Selena Gomez, 5 Reasons Why I hate Selena Gomez and a WE HATE SELENA GOMEZ Facebook page.

The Daily Mail reported that last year, when Gomez was photographed a mini-dress with her bare legs draped over Justin while she received a foot massage, she immediately became a target of the jealous campaign. The picture was reportedly taken and posted on Twitter by a fan.

Stay away from Justin paedophile, an angry fan wrote on Twitter, according to the Daily Mail.

Selena Gomez is dangerously close to a long, slow painful death, the Daily Mail reported that another message read.

Gomez and Bieber kept their relationship private for months before they were spotted kissing.

Here are some of the tweets from the Stop Selena Hate trend:

-- Dear Haters, You need to Stop Selena Hate, She's human with feelings, dating ur idol isn't a crime :/ so.. - Gonna Live My Life!! ‏ @JBOwnsMamacita

-- Your hating on Selena because she's living her dream & she's dating your celebrity crush. thats pathetic. Stop Selena Hate - Swagiana, ya dιg?

-- Stop Selena Hate RT if you think that the hate has to stop. - ?ele?α ι? ?y qυee? ? ‏ @WeL

-- Stop Selena Hate. You hurt Selena = You hurt Justin, thats all I can say, grow a little bit up, stop hating and learn what RESPECT means ;) -  She's my lifesaver ‏ @SelenaMyFairy

-- Stop Selena Hate. She has feelings too. I have feelings too. Hate is a feeling. So respect my feeling. - Follow your dreams

Do you think the hate against Selena Gomez will ever stop? Let us know in the comment box below.