What does it mean if a girl says she is concerned about you?

ilikegirls2421100
What does it mean if a girl says she is concerned about you? This girl I used to like a lot, we went out couple of times, but she is seeing someone else. I went up to her one day to tell my feelings but before i was able to say anything, she was even more excited to tell me that she was seeing someone else.. So I never told anything about my feeling and I left. We stopped talking that much just "Hi" and "Hello" , when we saw eachother.. Sometimes I drink alcohol and last night I posted a pic having a beer... Now she is texting me "That she is really concerned about me for drinking" and "I've been acting a lot different with her... " what does it means? please someone help?
What does it mean if a girl says she is concerned about you?
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