Best way to let a girl know I'm interested? Without being annoying.
Here's the story. There is this girl I like at work. We don't work on the same floor or department but there has been a few times that we have worked on a few projects with each other. During the times that we've worked together I have grown a liking to her. I also think that during the times we have worked together, she has given me some signs that she might be interested in me as well, though I didn't realize until later. A few of the signs that I think she has given me has been has been tell me how I'm funny, smiling a lot, and extending our conversations longer just to name a few.
What I want to know is, what would be best way for me to let her know that I'm interested in her? I'm kind of afraid of just asking her out right away because if she isn't interested in me, then it might go sour in our work relationship. So I want to know what subtle ways there are to let her know I'm interested in her. Do I call her just to chat once and a while? Do I ask her to get some coffee? What ways do I let her know I'm interested without making me too obnoxious or annoying to her. Once I know more that she is in fact interested, that is when I'll ask her out. Let me know what your thoughts are. Thanks!