Dear

へ

-e

(an informal way of addressing the recipient in a letter's opening line)

恋しい

koishii

(loved; lovable)

愛しい

itoshii

(loved; lovable)

拝啓

haikei

(formal way of addressing)

様

sama

(formal way of addressing)

親愛なる

shin'ai naru

(a formal way to start (often after my) addressing somebody one likes or regards kindly)