Life is too short to fear rejection. The future isn't promised, so worrying about it won't do you any good. There's nothing like the feeling of being courageous enough to go after what you want. It's a rewarding feeling to at least try something even if the situation doesn't play out as you expected.
While you might not be aware of it, we all have at least a second to choose how we want to respond to a trigger -- and most times more than a second. If you choose to take the breath and tune in, you have a chance of responding from your loving adult self rather reacting from your ego wounded self. You have the chance to move into compassion for yourself.
The bottom line is that rejections are a fact of life -- we all experience them and we all hurt when we do. The best thing we can do is to soothe our emotional pain, take steps to revive our self-esteem, and to connect to our core groups and by doing so remind ourselves that others value and love us even if our date does not.