I met this girl 5 months ago. The moment I laid eyes on her I started liking her. We soon developed friendship. We started roaming around with her friend also on a regular basis. Then about 3 months ago I said I liked her. Although I got a mixed response from her. But our friendship intensified with passing days. I started spending 6-8 hours a day with her. I though all is going well and maybe we have fallen for each other. Then I came to know that she has been messaging this another guy this whole time. Finally about a month ago I confronted her and professed that I love her. She said that she a long time boyfriend from 3 years. But still our friendship was maintained. I also slept with her 2 nights but nothing happened . Finally about a week ago we kissed but were both drunk. After this incident she said that this is wrong. Since then I get different vibes from her in different days. Yesterday she was clearly flirting with another guy in front of me. Although I spent less attention towards her than to her friends during evening. Can you guide me as to what should I do? Clearly I love this girl and would like to win her back.. Any suggestion please?