The Quick Answer
Andrew's love for his sister is the engine of the entire story. He feeds her, houses her, protects her, lies for her, kills for her and stays with her when every route gives him chances to run. Nobody does that for three episodes out of habit. The catch — and there is always a catch with these two — is that the same bond includes possession, resentment and a romantic layer the game confirms in Episode 3 that Andrew has suppressed for years. Love, in this story, is not the redeeming force. It is the thing that makes every other horror possible.
If you came here for the romantic version of the question specifically, the dedicated post is Is Andrew in love with Ashley?. This post covers the whole bond, because in Andrew's case the two questions cannot be cleanly separated — and that failure to separate them is, more or less, the character.
The Childhood Bond: Andy the Parent
Start where the game starts: with their mother. Renee Graves decided early that Ashley was too difficult to raise and largely stopped trying, and the person who absorbed the abandoned job was Andrew — a child himself, a few years older, who became his sister's feeder, comforter, entertainer and shield. Psychologists call this parentification. The game just calls it Andy: the childhood persona Ashley still uses, the big brother who could be relied on to fix everything, including her.
Then came the incident that welded the bond shut: the death of their friend Nina, in a prank Ashley drove and Andrew has carried the blame and guilt for ever since. Shared guilt is the strongest glue this story owns. From childhood onward, the siblings are not two people who chose each other; they are two people who were left with only each other, plus a secret that made the outside world permanently unsafe. The siblings post covers the family structure in full — the short version is that Andrew did not just grow up loving Ashley. He grew up being the only person who ever did, and being loved back by someone with no other object for it.
How Adult Andrew Shows It
Measure the adult by his actions and the answer is not subtle. In the quarantined apartment he manages the starvation rationing around her needs. When the killing starts, he does the heavier share of it and nearly all of the covering up. He gives up his relationship, his freedom, his name and eventually his safety, in that order, across three episodes — and the narration makes clear he is not even surprised at himself anymore. Protecting Ashley is not a decision Andrew makes. It is the default he would have to decide against, and he almost never does.
But the same episodes show the shadow side riding along: the control, the slaps, the cold fury, the visions of killing her that the demon's trinket keeps serving him. Players sometimes read those as proof the love is fake. The writing suggests the opposite and worse reading — that they coexist. Andrew resents the cage and loves the person who is both his fellow prisoner and his jailer. His tenderness and his violence come from the same place, which is why Ashley's taunt lands: he slaps one side of her face and kisses the other.
Does That Love Become Romantic?
Here the game stops being ambiguous. Episode 3 confirms — through Andrew's narration, his history and the siblings' own cliffhanger conversation — that his feelings for Ashley include a romantic layer he has recognised and suppressed for years. The evidence was planted long before: his relationship with Julia, his ex-girlfriend, is shown in Episode 3 flashbacks as something he entered out of guilt over Nina and partly to disprove the rumours about him and his sister, and never actually filled. He tried to love somebody else as a defence against this. It did not work, and the failure hurt Julia badly.
What Episode 3 does not do is let him act on the confession cleanly. Decay's Andrew sets boundaries, breaks them, kisses his sister on one branch — the scene dissected in Did Andy and Leyley kiss? — and spends the rest of the route at war with himself. The Burial branch, where the vision suggests he stops fighting it, is unreleased. So the romantic layer is confirmed as feeling, partly confirmed as action, and unresolved as story. That is an honest summary of a deliberately uncomfortable text.
Love, Codependency, or Both?
The fandom's longest-running argument about Andrew is really a vocabulary fight. Call it love and you centre his devotion, his sacrifice, his genuine care — all real. Call it codependency and you centre the structure: two people whose identities were built inside each other before either of them had a self to bring to the relationship, who cannot regulate their lives apart and cannot survive together either. The game, notably, refuses to pick. Its horror depends on both words being true at once.
There is a useful test the story keeps applying: love, in most tellings, wants the other person's good. Andrew routinely wants Ashley's survival, her comfort, her freedom from consequences — and almost never her good, when her good would mean separation, treatment, prison, or any future that does not include him. Whether that is a corrupted form of love or love's absence wearing its clothes is exactly the argument the game wants playing in your head at 2 a.m. — and the reason the Ashley debate post exists for her side of the same machine.
What His Love Does Not Mean
Three clarifications to close, because this question attracts bad takes. His love does not make him good: he is a murderer who chose his sister over every victim, and the game never asks you to acquit him for it. It does not make Ashley safe: on the Decay route, the person most likely to kill her is the person who loves her most, and both of them know it. And it does not make the relationship the game's secret romance: the writing frames the bond as the core horror of the piece, the coffin of the title — two people buried in each other, alive.
So: does Andy love Leyley? Completely, ruinously, and in every register the word can carry at once — brotherly, parentally, possessively, romantically. The game is not asking whether. It is asking what a person becomes when one single love is the only one he was ever allowed to have.