Are they my true friends?

i have three Friends in my problem- Selena, Georgie and Serena. In grade 5 me and Serena were the best of friends. In Grade 6 Selena and Georgie joined us n we became the best of friends. but Serena wasn't as close 2 Georgie n Selena. So in grade 6 we had a fight ( me, Selena, n Georgie- Selena n Georgie against me) bcoz of Serena. And after that fight Serena became close to Selena n Georgie n less close 2 me. In grade 7 also we had a fight. Dis time also Serena, Selena, Georgie were against me . But it didn't last long. And after that fight Serena and Georgie became best of friends n Selena n me became the best of friends. Now in Grade 8 too, we had a fight. Selena n her boy friend a quareled n her boyfriend told her that Serena n Georgie say mean things about her behind her back. Selena cried a lot and asked me whether it was true. I knew that it was true.. so i told her- "yeah they do that". So Selena, Georgie n Serena had a fight. Now the fight is over ( i don't know how) but all three of them r blaming me that I BROKE THEIR FRIENDSHIP! So tell me friends what did i do??? I only said the truth! I was hurt when Selena believed Georgie n Serena but not me. I know that we had a lot of fights where the three of them were against me. Does it mean that they hated me all along n Selena was acting that she was a true friend? were they my true friends. Yesterday they apolized 2 me bcoz Selena's boyfriend said them 2 say me sorry. But 2day they only smiled at me n didn't asked me 2 join me. (During grade 7 i saw them look meanly at me behind my back specially Georgie and Selena) WERE THEY MY REAL FRIENDS???? please help me!