「Buddhism teaches unconditional love and compassion, so however my partner treats me, I'm supposed to accept it. After he cheated he asked me to forgive him and take him back, and told me that if I can't, my heart is just too small and my practice isn't deep enough. Setting a boundary, saying no — that's my ego and my discriminating mind talking. A real practitioner shouldn't have limits, shouldn't even have feelings about it; they should just keep absorbing.」

People who reason this way are usually not lazy about practice — they are trying too hard to get compassion right, refusing to be the one who is "not generous enough." That sincerity deserves respect. But the argument breaks in four places.

1. Compassion flows out of wisdom, not out of self-erasure. In Buddhist teaching, compassion and prajñā are one thing, not two; Tiantai states it flatly: "compassion is wisdom, wisdom is compassion." When compassion is wrapped around craving and fear you can't put down, the texts give it a specific name — "compassion tangled in attachment and views" (愛見大悲) — and the Vimalakīrti Sūtra says this kind of compassion breeds exhaustion and is to be let go of. Tolerance squeezed out through gritted teeth isn't compassion; it's depletion.

2. The fourth of the Four Immeasurables is literally equanimity (捨). Loving-kindness, compassion, sympathetic joy, and equanimity stand together. Equanimity is precisely the capacity not to be steered by another's emotions, not to lose judgment through clinging. The Mahāparinirvāṇa Sūtra is blunt: cultivating equanimity cuts off "craving and aversion toward beings" — it cuts the stickiness toward one particular person. Compassion without equanimity slides into possession and enabling.

3. The "unconditional" in universal compassion means unselective as to whom, not unlimited exposure to harm. It means goodwill isn't withdrawn because someone is a stranger or an enemy. It never said you must stay standing in the place where you are being injured. Wishing someone well and continuing to live with their behavior are two separate decisions.

4. The Buddha himself set boundaries. He established precepts, rebuked disciples to their faces for misrepresenting the teaching, and when a community kept quarreling and would not be advised, he finished his verse and left — remarking afterward that he had gotten free of them. If unconditional absorption were the measure of compassion, the Buddha would be the least compassionate figure in his own scriptures. Suppressing legitimate pain and anger in the name of practice isn't non-self; it's dishonesty toward yourself.

In the canon, compassion is inseparable from wisdom and always contains equanimity — and the Buddha never treated unprincipled endurance as practice.

1. Compassion must be held by wisdom, or it becomes "compassion tangled in attachment." The Vimalakīrti Nirdeśa Sūtra: 「於諸眾生若起愛見大悲，即應捨離。所以者何？菩薩斷除客塵煩惱而起大悲，愛見悲者，則於生死有疲厭心；若能離此，無有疲厭。」 — if compassion for beings arises entangled with attachment and views, it should be relinquished; such compassion breeds weariness within saṃsāra, while compassion free of it never tires. The same passage cites the Buddha: 「若自有縛能解彼縛，無有是處；若自無縛能解彼縛，斯有是處。」 — one who is still bound cannot untie another; only the unbound can. The Mohe Zhiguan puts it directly: 「慈悲即智慧，智慧即慈悲……不同毒害，不同但空，不同愛見。」 — compassion is wisdom and wisdom is compassion; it is not poisoned, not mere emptiness, and not attachment-driven.

2. Equanimity is built into the Four Immeasurables. The Mahāparinirvāṇa Sūtra: 「夫修慈者能斷貪欲，修悲心者能斷瞋恚，修喜心者能斷不樂，修捨心者能斷貪欲瞋恚眾生。」 — kindness cuts craving, compassion cuts aversion, sympathetic joy cuts discontent, and equanimity cuts craving and aversion toward beings. What equanimity dismantles is exactly the inability to let one particular person go.

3. The Buddha drew a line himself. When the monks at Kauśāmbī kept fighting and would not take counsel, he spoke this verse: 「若不得定伴，慧者獨修善，如王嚴治國，如象獨在野……學不得善友，不與己等者，當堅意獨住，勿與惡共會。」 — failing a steady companion, the wise practice good alone, like a king governing alone, like an elephant alone in the wild; finding no worthy friend and no equal, resolve to dwell alone rather than keep company with the harmful. Then he left: 「爾時，世尊說此頌已，即以如意足乘虛而去」 — having spoken the verse, the World-Honored One rose into the air and departed — and afterward reflected, 「我已得脫彼拘舍彌諸比丘輩，數數鬪訟，相伏相憎，相瞋共諍，我不喜念彼方」 — I have gotten free of those Kauśāmbī monks with their endless disputes, mutual domination and hatred; I take no pleasure in that place.

4. "Unconditioned great kindness" means impartiality, not permissiveness. The Sūtra of the Contemplation of the Mind-Ground: 「無緣大慈攝眾生，猶如一子皆平等」 — unconditioned great kindness embraces beings, regarding each equally as one's only child — and the same passage pairs it with 「大慈大悲恒相續，大喜大捨為先心」, placing great equanimity right alongside great compassion. "Unconditional" describes whom it excludes (no one), not what it tolerates.

The fact that you hold yourself to the question "is this unconditional love?" means there is real compassion in you. Don't let anyone talk you out of that. I'd just like to look at one word with you. The Four Immeasurables are kindness, compassion, joy, and *equanimity* — and that last one isn't coldness. It is the clarity of not being steered by another person's emotions and demands. When the texts speak of unconditioned great kindness, they mean it doesn't select its object: goodwill isn't withdrawn because someone is a stranger or even an enemy. They never said you have to keep standing where you are being hurt. When the Buddha met a community that kept fighting and wouldn't listen, he finished what he had to say and walked away — and said plainly he was glad to be free of them. So wishing him well and continuing to live like this with him were always two different decisions. You can hold no hatred in your heart and still draw a line in your life. Real compassion isn't wrung out of your own suffering; it grows out of seeing clearly. Taking care of the person who is hurting — you — isn't selfishness. It's what makes compassion sustainable.