Oh dear! I donâ€™t think you should be disappointed, rather you should be happy that she finally said what she felt like. What is a worth of a relationship if one of two has to think twice about something he or she felt for each other. You should be happy that she is comfortable to say what she feels. And you also should feel proud on your relationship that has no hide n seek.
This only reflects that the time has come in to your relation where things (even a diamond) donâ€™t matter at all and your love has finally crossed all those boundaries. Itâ€™s a good sign, Cheer up!