[At first she only nods slowly along, takes it in. It's tragic that he has such feelings, and likely a fair amount of guilt because she knows how he loves Helix in spite of all that he's saying. She's not entirely a stranger to that feeling herself, as unusual as it is for Lacus to regret anything.]
[Nodding won't do. Lacus turns and embraces Aidan, from whatever angle he'll allow. She'd have a difficult time wishing for his life to have been different on his behalf because she believes in fate, though she also knows it can be cruel.]
A soul like yours deserves happiness. I wish I could give it to you.