He's going to ask me to marry him. He knows I'll say, "yes". How can I make the moment even more special?
say no first and make him think about it, then kiss him and say yes!!
Start crying (happy tears), and make it a huge deal that he's preposing and pretend you had no idea. Smile and hug him tons and kiss him!
Be yourself, and tell him just how happy he is making you. Tell him how much you love him, and how you're looking forward to spending the rest of your life with him. Just tell him how you really feel!
Uhhh... The last time I looked at the rule book, it's HIS responsibility to make this event "special".You: do nothing but act surprised. Congrats, BTW.
Bring a condom...