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Ashton Kutcher and Mila Kunis - Ashton Kutcher has been married to the Ukranian-born American actress since 2015. Whenever they show up to events, they never fail to show how time only strengthens their relationship.

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Ashton Kutcher and Mila Kunis - It isn't difficult to see them kissing, whether it be on the red carpet or during a basketball game, such as this one in 2016.

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Portia De Rossi and Ellen DeGeneres - Australian actress Portia de Rossi has been married to talk-show hostess Ellen DeGeneres since 2008.

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Portia De Rossi and Ellen DeGeneres - This adorable photo comes from 2008 when Ellen DeGeneres won an Emmy and celebrated it with a kiss.

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George and Amal Clooney - American actor George Clooney and Lebanese-British lawyer Amal are the ideal Hollywood couple.

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George and Amal Clooney - They exude so much romance that they don't even need to be kissing to make it on this list. This adorable moment was from the Cannes Film Festival in 2016.

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Prince Harry and Meghan Markle - Harry and Meghan are swapping adorable looks almost every time they're seen in public.

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Prince Harry and Meghan Markle - But it was on their wedding day in May 2018 that we saw them share that iconic kiss! Just. So. Cute.

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Jessica Biel and Justin Timberlake - The actress and singer have been together since 2007, married since 2012, and have shared many romantic kisses in public.

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Jessica Biel and Justin Timberlake - This sweet kiss was shared during NBA playoffs in 2012.

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Gerard Piqué and Shakira - This adorable couple brings together both soccer and music fans.

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Gerard Piqué and Shakira - It was difficult to choose just one romantic moment between the two, but this cute kiss took place after Barcelona won the Copa del Rey in 2015.

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Tom Brady and Gisele Bündchen - The Brazilian supermodel and the quarterback got married in 2009 and have since defied the theory that relationships cool down over time.

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Tom Brady and Gisele Bündchen - Whenever they make public appearances, they show off how in love they still are and are not ashamed to give a huge kiss for the cameras.

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Tom Cruise and Katie Holmes - Remember the days of TomKat? Though their marriage broke down in 2012, one kiss went down in celeb history for ever.

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Tom Cruise and Katie Holmes - The iconic smooch between the actor and his new fiancée on the red carpet in June 2005 swept fans away.

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Angelina Jolie and Brad Pitt - Even though Jolie and Pitt are no longer an item, this iconic Hollywood couple served as inspiration for many stars during their relationship.

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Angelina Jolie and Brad Pitt - Together for almost 12 years, the couple always appeared united, but rarely kissed in public. This was a rare moment captured at the Cannes Film Festival in 2011.

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Barack and Michelle Obama - The former US president and his wife were well known for their visible chemistry when they appeared in public.

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Barack and Michelle Obama - At a basketball game in Washington in 2012, the couple shared this sweet kiss for the 'Kiss Cam.'

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Ryan Gosling and Rachel McAdams - The actors, who moved audiences with that kiss in 'The Notebook' (2004), also dated in real life for a while.

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Ryan Gosling and Rachel McAdams - Gosling and McAdams actually won an award for Best Kiss at the 2005 MTV Movie Awards for 'The Notebook,' so obviously they had to demonstrate the moment again on stage!

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Donald and Melania Trump - The current US President and his wife are famous for sharing many awkward PDA moments.

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Donald and Melania Trump - Though they can sometimes look cute, if a little stiff, on camera.

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Nicole Kidman and Keith Urban - The Australian actress married Urban in 2006, and the two form a very tight couple.

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Nicole Kidman and Keith Urban - The two shared an adorable kiss as they celebrated Kidman's Emmy award for Best Actress in 'Big Little Lies' in 2017.

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Mariah Carey and Nick Cannon - Though Carey and Cannon have since divorced, they'd previously been unable to keep their hands off each other when walking the red carpet!

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Mariah Carey and Nick Cannon -

They had this tender moment on stage at the 12th Annual BMI Urban Awards in 2012.

See also:  Unlikely celebrity couples who were once engaged

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