My best friend seems to be avoiding me?

Me and my best friend don't go to the same school anymore. I don't think she likes me very much anymore. She never replies to my BBMs (BlackBerry Messenger) even though I can see she reads them and she always boasts about her school friend (let's call her Lola). For example, on Facebook her status was, "Ugh it's Saturday and I have to go to school for Open Morning. That's just not right." and I agreed with her saying, "Oh poor you, I agree, school on Saturday is just not right!!" and her comment was, "Oh I don't care because my friend Lola is with me it's soo fun" and I'm thinking, "Then why did you make it your status that it would be bad?!". I'm really jealous of this girl Lola as I can see how close they are and I think she's replacing me. Don't just say all 3 of us can be friends because we can't as we go to different schools and it would be weird if I tried to befriend her as I've never spoken to her in my life and I don't really want to. I'm always the first one to text her and she rarely replies so now I don't text her anymore. I miss our old times together. What shall I do??