I feel like I’m nothing to my friend

I feel like I’m just nothing but a second choice. I literally do everything to make her happy, but it’s not enough and then I keep feeling like I’m not enough. She had lied to me about a party she invited me to in the beginning of October and tried to justify the lies. She has no idea of how much effort I put into this. She always blows me off to go with her other friends. I’m trying my hardest to put effort into this and it’s just me doing it. She definitely has no idea how much I cried these months because I wasn’t enough for her. She made me feel like I was wanted for once, like actually wanted to be hung out with.