1. "Dear" in English can be translated as various terms of endearment, including "darling," "honey," "sweetie," "baby," and more. It's a versatile term that can be used to address friends, close loved ones, or even長輩 to address juniors. In English diaries, it is common to start a entry with "Dear Diary."2. "Sweetheart" is another term that can be used to express affectionate feelings towards someone. It is not only reserved for romantic partners but can also be used for close friends. In some contexts, it may also be used by elders when addressing their younger counterparts.3. "Sweetie" is a term that signifies closeness and affection. It can be used to address both romantic partners and close friends. Similar to "sweetheart," it has a friendly connotation and can be used in everyday conversations to express warmth and rapport.4. In English, there are several endearing terms that can be used to express love and fondness for someone. These terms are not only used in romantic relationships but can also be applied to friends and family members. For instance, many men enjoy being addressed by their girlfriends with terms like "dear" as it is a straightforward and heartfelt way to express one's affection.5. Using "dear" to address a boyfriend is a way of constantly reaffirming one's love and admiration for them. Each time the term is used, it is like a mini-declaration of love, reinforcing the emotional bond between the couple.