Bad Girl, as in someone who is naughty, would be tuhma tyttö.
If you mean a bad girl as in a bad person then it's paha tyttö.
Baha ditta
Hyvä tyttö
"kaunis nainen" (literally "a beautiful girl")
Say I will and always love you
kihara tukka tyttö
"(Sinä) olet söpö."O is pronounced like in organization.Ö is pronounced like i in girl.
How is miten in Finnish.
For you is sinulle in Finnish.
I am not Finnish. - (Minä) en ole suomalainen.
Friendship in Finnish is "ystävyys".
Food is ruoka in Finnish.
Flower is kukka in Finnish.
komea is handsome in finnish :)