how to know if a girl is interested in you?

Tweet

there is one girl in my office who looks at me quite often. the problem is that my workstation is not facing her workstation. so even if she looks at me she could look me from behind & most of the time i don't even come to know that. one of my friends have told me that she looks at me quite often. another friend told me that she was asking about me. she had once given me a smile. we both never spoke to each other.