like
僾 centers on resemblance or likeness: being like something else. Its other meanings (to hide, choke, grieve) are rare and do not form a clear conceptual cluster with the core sense of 'like'.
僾 combines 亻 (person) with 愛, which likely contributes the sound. The exact historical development is uncertain, and the connection between 'person' and 'like' is not clearly established.
A person (亻) beside 愛 (love) suggests being like someone you love, or resembling them in some way.
For アイ, imagine a person who looks just like you, saying 'I am like you': 'I' -> アイ.