The world of TV has seen many couples come and go, but many are in our hearts forever.

In honor of Valentine's Day, HuffPost TV pulled together a list of 15 on-screen couples that make us believe in love. From reality TV pairings to twisted terrorist-CIA relations to office romances that have turned into lifelong partnerships, click through the slideshow below to see which current TV couples give us faith that true love does exist.

Happy Valentine's Day!

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  • Adam & Kristina Braverman, "Parenthood"

    There is not a more heart-warming or honestly-depicted couple than the eldest Braverman boy and his wife. Adam and Kristina support each other unconditionally in sickness and in health; their fights are frighteningly relatable (and always fixable); and they would very clearly do anything for each other and their children. Adam and Kristina (brilliantly portrayed by Peter Krause and Monica Potter) touch your soul with their ability to overcome anything, big and <a href="http://nbcparenthood.tumblr.com/post/40296959072">small</a>.

  • Brad & Jane, "Happy Endings"

    Why so much love for this underrated comedy's only married couple? It's not just that Damon Wayans Jr. (who plays Brad) and Eliza Coupe (who plays Jane) individually have such brilliant comic timing. Together, the actors' ability to bring the funny is so potent that it's possibly dangerous. But wait, there's more: They're also completely convincing as a couple whose deep love gets stronger every day. As Penny might say, "They're ah-mah-zing."

  • Khloe & Lamar, "Keeping Up With The Kardashians"

    Amidst all the Kardashians' craziness and tangled web of dysfunctional relationships, there stands one couple that appears to truly love each other: Khloe and Lamar. Tabloid rumors aside, they seem to actually have a healthy marriage that's based on affection, attraction and mutual respect. They put each other first: When Lamar's psyche got messed up after the Lakers traded him, Khloe made the ultimate Kardashian sacrifice and pulled the plug on "Khloe & Lamar" for the sake of her husband's well-being. Now <em>that's</em> love.

  • Matthew Crawley & Lady Mary, "Downton Abbey"

    It may have taken them a couple seasons to get there, but from the moment Matthew Crawley and Lady Mary laid eyes on each other at Downton, it was clear they were meant to be. A love story for the ages!

  • Jim & Pam Halpert, "The Office"

    There's nothing better than a best-friends-turned-couple scenario, and that's exactly what Jim and Pam have given the TV world. Who can forget the end of Season 2 when Jim declared his love for her even though she had a fiance? Eventually they settled into married life, had kids, and overcame every challenge thrown their way ... including one of the documentary crew members falling in love with Pam.

  • Snow White & Prince Charming, "Once Upon a Time"

    The original and definitive fairytale couple have had their share of ups and downs -- dealing with amnesia, curses and psychotic parents, to name a few -- but they remain the epitome of true love. As equals who are determined to save each other as many times as necessary (preferably with a magic kiss), their storybook romance is destined for a happily ever after.

  • Homer & Marge Simpson, "The Simpsons"

    These two have been through literally <em>everything</em>, and still love each other. Despite extramarital temptations for both of them, they always end up more in love than when they started.

  • Callie Torres & Arizona Robbins, "Grey's Anatomy"

    Callie and Arizona have always had a tumultuous relationship, to say the least. From moving out of the country to babies with best friends to fatal plane crashes, their relationship has been tested beyond most and they've survived it all. Not even Callie's amputation of Arizona's leg ruined them. So what could?

  • Leslie Knope & Ben Wyatt, "Parks and Recreation"

    Leslie Knope and Ben Wyatt didn't always have an easy go of it. Their loving relationship started with contempt, then love blossomed, even though it was considered taboo. After a hiatus, the couple reunited to become one of the sweetest and most endearing TV couples out there today. Love does conquer all.

  • Carrie Mathison & Nicholas Brody, "Homeland"

    Love comes in many varieties. Sometimes it's the stable, healthy, enduring kind of love that can sustain a lifelong marriage. Others, it's the obsessive, make-you-crazy kind of infatuation that gets you fired from your job, lands you in a mental institution and keeps you sleeping with with a terrorist/Congressman against all better judgment. And that's the case with Carrie and Brody on "Homeland." Their twisted relationship may not be Hallmark-card material, but they make really entertaining sex noises.

  • Phil & Claire Dunphy, "Modern Family"

    Sometimes two people are so perfect for each other that their imperfections balance the other one's out. Both fully neurotic and prone to screwing things up, Phil and Claire are the model modern couple.

  • Nikita & Michael, "Nikita"

    The couple that spies together ... goes through a lot of terrible stuff, apparently. But despite illegitimate children, numerous near-death experiences and Nikita being forced to amputate Michael's hand to save him from an explosion, we know these two kick-ass secret agents are made for each other. Love has never hurt so good.

  • Lily Aldrin & Marshall Eriksen, "How I Met Your Mother"

    From the very first episode, this couple captured our hearts (and made us want to get busy in the kitchen!). They've taught us that being in love doesn't have to mean giving up high-fives or ignoring your friends. Want to make sure you're not "that couple" who ruins every group outing? Make these two your role models in love.

  • Will Gardner & Diane Lockhart, "The Good Wife"

    Will and Diane aren't lovers on "The Good Wife," but they're "the perfect couple" ... "without the sex," in their words. As partners of their law firm, these two have to know each other like the back of their hands. Their friendship -- they slow dance while drinking alcohol and give each other sly low-fives -- and wonderful working relationship proves that men and women really can be great, loving friends.

  • Agron & Nasir, "Spartacus"

    You'd think that a full day of battling Romans would leave these guys too tired for serious romance, but you'd be wrong. No matter what obstacles Spartacus' band of rebellious former slaves face, Agron and Nasir's love keeps on getting stronger -- and hotter. 'Spartacus' is set in brutal world short on tenderness and mercy, but the sweet, serious bond these two men share is a one of the show's most reliable bright spots. You can't beat the combination of true love and rippling abs.

Earlier on HuffPost: