SUBREDDIT: r/relationships
TITLE: Me [18 M] and this girl i have been seeing [20/F] Acts like a different girl online vs real life
POST: So this girl I've been seeing, it feels as though when I'm with her she's the perfect girlfriend, she's all over me and I can tell she's really into me by the way she kisses me, looks at me etc. But the way she acts on Facebook, and when she's not with me is the polar opposite of the girl I see in real life. 

She's very apathetic to going out, i put this down to her weed addiction. And she will regularly not respond to me, but then again I've always been pretty dry on Facebook. My question is has anyone else experienced this where the person online doesn't match the person in real life. Any help, or comments are welcome. English is my second language so sorry for any typos or grammatical errors. I was thinking about discontinuing the relo, but
TL;DR: 
She acts like a different person IRL, and irl she acts like she loves me, but then can't be bothered to respond on facebook or come out and see me.