Why do I feel like nobody cares about me when they say "I'm here with you" 

Why do I feel like everyone is lying to me when they say: 

"I am here for you"

"I care about you"

"Talk to me when you need me"

"I miss you" 

or just to put it simply, when they empathize or sympathize with me. Why is it SO hard for me to believe them? I know the majority of them mean it. But I just can't believe it. they're always lying when it comes to Caring and loving me. I want to be loved like everyone, this is so hard. I want to be able to communicate and express my emotions like a normal, undamaged person. 

I guess above all, I am grateful. I am happy to be alive right now and writing this. I will find MORE people who care about me, that won't leave me when things get tough. I am worth loving. And I know that  I will someday, be functional and happy. Hope is the only thing I am holding on to. Maybe it will be the only thing that will change my future and actually help me recover. 