The ancient and medieval thinkers asked what is love? The modern ones, starting in the 19th century, started asking harder questions: can you choose to love someone? Does love require reasons? What does loving a person mean if that person keeps changing? The questions sound abstract until you notice they describe everything weird about dating in the 2020s.
The existentialists: love as a choice you have to keep making
Existentialist philosophers treated love as a problem of human freedom. Their question was roughly: what does it even mean to love a free person?
Søren Kierkegaard — love as a leap
For Kierkegaard, authentic love isn’t a feeling that happens to you; it’s a passionate decision. A leap of faith. You commit despite uncertainty, because waiting for certainty means never loving at all. The cliche about “knowing it’s right” — Kierkegaard would say nobody ever knows it’s right; people commit and find out.
Jean-Paul Sartre — the love paradox
Sartre noticed something uncomfortable: when you love someone, you want them to love you freely. But the moment they love you, you start trying to secure that love — to guarantee it, to fence it in. The fencing destroys the freedom that made the love valuable in the first place.
This is the paradox of jealousy, of possessiveness, of “are you mine?” — the more you try to lock the other person down, the less freely they can choose you. And it’s the freedom you wanted.
Simone de Beauvoir — love without losing yourself
De Beauvoir, writing in the 1940s, took apart the standard romantic script — in which women in particular were expected to dissolve their selfhood into their partner’s life. She argued for authentic love: mutual recognition of two free people, neither of whom collapses into the other. Sounds obvious now. Wasn’t, then.
Albert Camus — love without cosmic backup
Camus asked: if the universe doesn’t ultimately mean anything, can love still mean something? His answer was yes, but you have to make the meaning. You can’t outsource it to fate or destiny or “we were meant to be.” You build it.
What the existentialists give you
Two practical things. First: you don’t get to wait until you’re sure. Second: trying to lock someone down kills the thing you’re trying to preserve. Both of these are now relationship-therapy standard issue. They were existentialist arguments first.
Contemporary analytic philosophy: the technical debates
Modern academic philosophy treats love as a problem to dissect. Four of the active debates:
Does love require reasons?
Niko Kolodny argues love is reason-based — you love someone because of who they are, and you can explain it.
Harry Frankfurt disagrees — love is fundamentally arational. We don’t love people because of their qualities; we value their qualities because we love them. “My beloved is dear to me because she is my beloved. Her qualities matter because they are hers.”
Why this matters for you: if Frankfurt is right, “but why do you love me?” is the wrong question. There may not be a satisfying answer that doesn’t sound either lame or instrumental. “Because of you” is the honest answer.
Particularity versus fungibility
If you love your partner for their kindness, intelligence, humor — what stops you from loving anyone else with the same qualities equally well? Are people replaceable in principle?
The fear behind every breakup: they’ll find someone better. Philosophers like Richard Kraut argue the answer is no — what you love isn’t a list of attributes, it’s the specific history you’ve built with this person. The qualities aren’t fungible because they’re embedded in a shared past that can’t be copy-pasted.
Union versus robust concern
Two competing pictures of what love does:
- Union theory (Robert Nozick): love creates a “we.” Two people form a new joint identity that transcends individual boundaries.
- Robust concern (Frankfurt): love is intense, sustained care for someone’s wellbeing. The lovers stay distinct.
This isn’t just academic. It maps onto real arguments: how merged should a couple be? Where do “we” decisions end and “I” decisions begin? Both theories are alive in the literature because both describe something real.
The moral psychology question
If love is partial — you care more about the people you love than about strangers — is love fair? Samuel Scheffler and Susan Wolf have written carefully about whether it’s morally OK to prioritize your spouse over a stranger who needs help.
Defensible answer: yes, partiality is built into what love is. A love that didn’t favor its object wouldn’t be love.
Love in the digital age
Contemporary philosophers are also working through the genuinely new conditions:
- Virtual relationships. Can you really love someone you’ve never met in person? What does physical presence add or subtract?
- Choice overload. Dating apps create the illusion of endless options. Does this freedom undermine the capacity for deep commitment? The data is starting to suggest it does.
- AI and parasocial love. As chatbots get more capable, what happens to the meaning of “loving” them? Is one-way love still love?
These aren’t settled. They’re being worked out in real time.
What modern philosophy of love gives you
Three things, practical:
- You don’t have to be able to explain it. “I just love you” is philosophically defensible, not a cop-out.
- Possessiveness destroys what it tries to protect. The freedom you want from your partner is also the freedom you have to give them.
- Particularity is built from history, not features. The person isn’t a checklist. The shared past is part of what you love.
The questions modern philosophy asks about love are the questions you ask yourself at 1 a.m. The philosophers have been thinking about them longer.