Taylor Swift is reportedly responsible for getting Selena Gomez to get back together with Justin Bieber.

The couple reunited last weekend after the 20-year-old "Love You Like A Love Song" singer's best pal Taylor, 22, reminded her that she is "crazy" about the "Boyfriend" singer, whom she dumped two weeks ago because of trust issues.

Taylor and Selena were spotted on a girls' night out on Saturday night and enjoyed dinner at Osteria La Buca in Hollywood. "When Selena hung out with Taylor she was really stressed out and frazzled about everything with Justin. But Taylor reminded her how crazy Justin is over her and to just try to stay above the fray. The problem between them stemmed from Justin texting other girls. So Selena is embarrassed by what he did because it makes her look stupid, that he would talk to these other girls, and she is also embarrassed that everyone is so invested in their relationship now because of his actions," a source said.

The couple are now eager to settle back into their relationship but are finding it difficult because of the huge amount of attention they are attracting.

The source also played down their argument last Friday during which Selena walked out of a restaurant after 10 minutes. "There was no blow up. Selena is just super embarrassed by all of this attention surrounding their relationship and she got upset when they sat down and people were staring and pulling out their cell phones. She was uncomfortable and wanted out of there, and that's why they left almost immediately," the insider said.