If you're questioning whether you are developing feelings for someone, then you probably are. As feelings grow you'll find it increasing hard to keep that person out of your mind. You'll look forward to the next time you see that person, you'll feel your heart leap when you meet up with him or her, and you'll feel down when you haven't seen him or her in awhile.
you should always be open with your feelings, hiding how you feel is always a good way to feel depressed.
Depends on what age you are really :) if your an adult, youre free to make your own decisions
How you know is if that you have really big feelings for that person you like him, but if you like him/her as a friend then youre just meant to be friends. -Chicygirl
Then let her know of these feelings, if she still insists her feelings for another person, let her have him.
well sometimes emotions can be confusing. Normally having communication with this person is the key. Talk about how you feel. Sometimes taking a step back actually helps you realize weather or not you are ready for a step forward. It sounds backwards, but it works.
He'll just let all his feelings out since youre not face to face which makes it harder
Easy. Tell her she's holding back her feelings. And youre aware of it. But, that you like her and that you can take things however speed she likes.
...technically, well, yes. it matters on your friend's feelings, unless they're just someone youre using just to get that guy. but still, feelings always matter. if she tells you, and you know that she is lying, that she couldn't care less, then go ahead, but be wary that her feelings still haven't changed. also, you would want to know why exactly she dumped him, as you say. it may be something you would want to know.
decide if the feelings they have for the ex are bigger then the feelings they have for you. Everyone always has feelings for their ex - good or bad - so when you hook up with someone you just have to be sure that their feelings for you are stronger.
Usually you would know on your own
you know when u no longer have feelings for him/her you know when you no longer care/have felings for him!
When the feelings are just not the same or there anymore or that you know its for the best.