I started my first job recently and I worked with this girl who was probably the most nicest girl I've ever met. I liked her from the first day. She was really kind and friendly. Basically everything I like in a person, she was the one. She texted me the other day when I got an award at work. I never gave her my number so she must've got it from the boss. We didn't text each other much apart from work related questions but I once told her that you're really nice and my favourite but her response was what about others which made me feel a bit strange. 2 weeks later she told me she's leaving soon as she's got a new job. I was so shocked as she never talked about leaving her current job. She's been working for 2 years and I only been here for a month. On the day before she left, I gave her a farewell card and chocolates. In the card I wrote my feelings for her which said that you're a great person who is very kind and supportive and I enjoyed working with you and I also told her you look beautiful smiling and wished her many success in here future. I had expected her to text me saying thanks but she never did. It's been 2 months now since she left and we haven't texted each other at all. I did once text her a week after she left about hows her new job but she took a whole day to reply. The problem is, I feel so alone and bored at work without her because everyone isn't as nice as she was and I'm always imagining her coming back to work one day which I doubt will ever happen. She also has a boyfriend is a very sociable person so I doubt she even remembers me now. I'm trying to forget her and move on but I can't help myself unless I get a new job elsewhere and meet new people but I won't be doing that anytime soon. Please help, what should I do? Could it be her boyfriend did not like my farewell letter and told her to not say thanks to me?