sei cni lujvo

c₁=s₁ feels lonely/separated from s₂.

In notes:

caucni: cl₁=ci₁ (misses / emotionally feels the lack of) cl₂=ci₃.
caurgau: g₁ (person/agent) deprives c₁ of c₂.
kancni: x₁ feels togetherness towards x₂
nonkansa: x₁ is alone/lonely/lonesome in state/condition/enterprise x₂.
pevyplu: x₁ is like an island in a sea of x₂; x₁ is very distinct/foreign (in appearance, composition and/or behavior) from surroundings/environment/background x₂.
smacni: c₁ is calm about x₂=c₃.