But, how about after long years and strong camaraderie you begin to feel a strange special feeling for her. It's seems your craving for some more sweet relationship. - You want her to be your sweetheart. Now, the question is how do you go about it?
Here are the following high-ordered tips I learned from my own personal experience:
1. Let her feel more special. Don't too harsh to tell her frankly your special feeling or else the opposite to what your expected will mostly happen. It doesn't mean that your too close already that will make you a winning advantage. The foundation is different. It's a friend-to-friend relationship that nurtured your closeness. And it's a big different thing to go about towards a deep lover relationship. The best advice is to go indirectly that will make the transition too smooth that will nurture her to adopt the change. Let her feel too special. Make a difference of what she's expecting for friendship. And please don't talk if she ask you why your doing it. Just let her feel. And then consider the next tip.
2. Feel how she differently responds. Be sensitive enough to feel her feeling with your very special attention given to her. Does she feel happy or bad? I know she will be too inquisitive on this stage. But be persist not to talk. Just give her a warm smile. And then let feel her respond. If she feel good or happy. Then, be more creative to find ways to give her a next level of a lover attention. Give yourself to patiently do this for 21 consecutive days. Because it has been proven by psychologist that habit will eventually form at minimum of 21 days. What you did here, is that you nurture her to adopt the change you wanted for. That is to have an lover relationship with her, more than an ordinary best friend.
3. Make a story. Now, it's time for you to utter a words. But hold it in a control. Just simply make a fiction story about your feeling, but keep your identity hide. You might mention a fictious character in your story. And then again, be sensitive to feel her feeling. There and right there, you know what would be her response if you will tell your real feeling. What you did here is to protect your friendship that serve as your advantage to your plan.
4. Be honest to tell your feeling. Nothing is more than to be honest to your feeling. Be warned to tell this, after you've discovered that she very well liked the change of attention you've given to her. That's the sign that she is adaptable to a special relationship with you. To tell her straightforward at this time would be your favorable move.
5. Don't expect for a return. The true love is not expecting in return. Set apart from your emotion if the opposite will happen. She might give you a testing ground or else she is giving more importance to your friendship. But please don't push her to decide.
6. Let her decide from the heart. From the lady perspective this would be not an easy decision to be made. Let her talk from the heart and smile as if every words come from her mouth is a blessing. Smile attracts positive response. And Yes answer is positive.
7. Time is the solution. Sometimes time hurts but enough time is the solution to every endeavor you wanted for. Let time do it. Just be patient enough to wait. Give her a fresh air to think and decide. And I believe that there is no live and strong rock will endure with the constant drop of a rain droplet. For me it took me 1.5 year to successful win her heart and it's a worthy effort to wait for.