okay so one of my old friends and i made plans to hang out while her sister (my old best friend) was in town and I was down to hang out and they never once hit me up, which I dont mind because my friend only hits me up when its benefitting her. She recently told my dad that I dont try to talk to her & that's a lie, I always message her and i understand we have our own lives and this & that so i try not to worry too much. But every single time I message her she will take weeks to reply or she'll open my message and wont even reply. I feel like there's no friendship to fight for and I no longer want to hold on to something when I'm the only one trying. what should I do?