It could be thinking about and kicking yourself for the past situation and how you behaved then is safer than looking forward and going out and finding that "someone else" to try to get to know? :-)

If it is fear holding you back, that could be the whole message of the dream, getting you realize the role fear has played and is still playing in your life. It's "easy" to say next time you will do X or Y but that may not be true if you are not practicing being less fearful now? The only way to deal with fear, whether it be of talking to boys or of monsters chasing one in dreams, is to face and address it.

I would take hope from your dream you just had. You did not fall asleep, your unconscious did not let you. You got the whole story, you see you were just "looking" at the couple (past tense, they're just a "memory" of what could have been in that case) and you had your grandmother self poking you, trying to "goad" you into action and not accepting your fear. She spoke in the past tense too, "I forgot you were. . ." to remind you that if you keep doing what you have been doing nothing will change. You have a wonderful unconscious, on your "side" and trying to help you. I love my dreams and always try to pay attention to them when I remember them