I only have 2 best friends and that's it

No between. I lost a friend, it wasn't like we had a fight it's just we got bored of talking to each other. Everyone else was no good for me. But only two(kinda) stuck around. I'm pissed at one of my best friends though, because she'll stop talking to me for awhile then she'll talk to me for like 2 days in a row then she'll stop :/.... She didn't start doing that until she got back with her boyfriend... Its irritating me enough I'm trying not to let it bother me. I talk to one of my best friends daily though... I just that's enough right? :/ I'm a teenager by the way lol