Broke up after 2 years

As the title says, I was with my first girlfriend (i’m 19) of 2 years and 3 months. Last night She was out with her friends then all of a sudden messaged me “does it not feel like we’re just friends?”. I said no because to me it didn’t. I asked why she had asked that and she said because to her it felt like it. Around 30 minutes after she met up with me and basically said she loved me but isn’t in love with me, and that she doesn’t want to lead me on. I’m of course very upset and don’t know how to deal with this. She was basically all i had as i don’t have a great life at the moment. Don’t know what to say but just needed to say something here. She didn’t seem upset or anything and pretty much heartless. After 2 years together i thought maybe she’d of said a bit more than that. I’m just angry, upset and confused. A few days before this i was upset at her as she kept adding loads of random men on snapchat and i told her how it made me feel but only thing she seemed to say is “okay” or “yep”