What does it mean to be "attached to someone"?

Being "attached to someone" typically refers to a strong emotional connection or bond that one person feels towards another. This emotional attachment can manifest in various ways, including feelings of love, affection, or deep friendship. It signifies a level of intimacy and personal investment in the relationship, indicating that the individuals share significant parts of their lives and experiences.

In contrast, the other options do not align with the concept of being attached. Emotional detachment implies a lack of connection, while unaffiliated suggests a sense of disconnection or absence of relationship. Close physical proximity could imply being near someone, but it does not inherently convey the depth of emotional involvement that attachment entails. Therefore, the answer accurately captures the essence of what it means to be attached to someone, focusing on the emotional aspect of relationships.