We used to be friends (she rejected me). Things didn't workout between us and we stopped talking. We are 2 strangers now. I can't block her from social media, i just can't. Its the only way i am in touch with her. I keep myself engaged whole day but still can't stop thinking about her. Its been 1.5 years and every day she comes in thoughts, in my dreams. Am i in love, or what? I just can't get over her, don't feel like talking to any girl; no one can replace her. What should i do?