Are my friends being fake to me?

do they really like me? i've been away for a month and during that month many of them sent me messages saying "hey i miss you we should hang out when you get back! when do you get back?" i get back, i announce that im back and its like no one gives a ****. i call one of my close friends to see if we can see each other and she tells me shes busy when i can see that she's on facebook barely making plans with other people. and whenever i try to talk to her on IM she says gtg im busy after she tells me shes doing nothing. is she ignoring me? are they all being fake pity faces? am i really friendless? i am not mean! i am not annoying! im just not the most popular person and i am not interested in those things! they always tell me they love me but that has kind of lost its meaning since they tell it to everyone. im funny (they laugh at my jokes), im usually positive and "chill", i am caring towards them....etc. y dont they just call me if they wanna see me? it seems like as if I always have to get their attention so that they invite me somewhere (almost inviting myself which i hate doing). so what is wrong with this? what should i do about it? i am very picky and making new friends is soo hard for me...... im scared