A happy 15th день рождения (and I surely hope that the dictionary I was consulting doesn't forsake me

).
I hope that you have a great celebration today and an awesome 16th year of life full of health, success, happiness, friendship, luck, peace, and love to come товарищ
(again, if the word is wrong it is the dictionary that has to be blamed for the mistake itself while I would have to be blamed for the vain attempt at a language I don't know and my putting faith in an online dictionary

).