funloving: Go out with on a casual date.Nothing special,just a casual outting with a friend but make sure it is just the two of you.
Get into a normal conversation over a bottle of soft drink (I don't subscribe to alcohol) and after discussing general issues look into her eyes,don't be shifty or shy.
Look into her eyes,call her name softly and tell her "I have been meaning to tell you this for a while now,I really like you and would want to be more than a friend" or something like that.
Watch her reaction,while still holding her eyes.If she likes you that much she will respond positively and the rest is game.If she doesn't want to be more than a friend with you,she will also tell you and if both of you are friends like you have said,it won't truncate your friendship.Just make sure you don't bring the topic up again.Women don't like guys who act all so needy and pester them for a relationship they don't want.
If her response during the date is not positive,don't feel bad.Smile,tell her it's okay,you understand her point of view,tell her both of you will still be friends,enjoy the rest of your drink,make general conversation,no more reference to the "toasting" that failed and then take her home(her home please  ) and move on with your life.Both of you can still remain friends.
Wish you all the best.

I guess... if i tell her how i feel, and her says no... i dont think she will be normal later... am i right?