Olivia and Lorenzo on set with Castle star Nathan Fillion i

Olivia and Lorenzo on set with Castle star Nathan Fillion in Los Angeles

[@szhooper]

After a day like today, SOO glad to have found this video that makes me utterly melt ~ I already knew Nathan was an amazing person, but to see him with these beautiful kids..... just.... awwwww....... THANK YOU for posting this!!

[@MuslimahMelika]

TOO MUCH CUTE, I CAN'T HANDLE IT!!!

[@mireillacastle1304]

OMG! That is sooo sweet!!!

[@TheShalhoubCastleFan]

OMG! So cute... I love you "Mr. Nathan"! Let's go catch the bad guy TOGETHER!!!

[@Alexfolledemoi]

Nathan and Stana need to find their significant others..i don't care who they are aas long as they treat our babies well....SERIOUSLY they'd be AWESOME Parents !

[@Pink-dc4qi]

to bad Stana wasn't in this video that would've been cute

[@yvonnejohnson772]

So sweet so cute so lovely so Nathan

[@AlexisDawnProduction]

He'd be an awesome dad!

[@JacksG13]

they are sooo precious!!!! ok, either Caskett or Stanathan have to have babies soon. I'm not picky on which!

[@xolisanicoleox]

awww soooo cutee

[@Ichbinblod]

excuse me? why are there only 20 comments on this? This is incredibly adorable. :] :]

[@sakufan94]

this is perfection...... I want to have Nathan's kids

[@jarvais56]

are those your kids? SO CUTE. oh jeez...now i'm getting images of little caskett and stanathan babies.

[@tevetka96]

i love this guy ;)

[@claudiapicariello5813]

OH. MY GOD.
I think my ovaries just imploded...
I need nathan to have a baby!!!!!!!

[@Thalya]

OMG!! So frigging adorable!! Alright Beckett soon we gonna need to go arrest someone.. you're gonna need your gun, your poster, your handcuffs and Javier Esposito! Looks the phone is ringing pick it up and say 'Beckett'!!! So cute *-*

[@VivianaVillanuevaPicolini]

Cuteness OVERLOAD!! Go make babies with Stana!

[@lisadykes5897]

Viviana V
they would have beautiful kids

[@shingblu]

who are these kids? they're so cute!
i agree, he would be a super cool dad, like how he is in castle with alexis. i wish there will be little nathans someday. how adorable would that be. :)

[@lilsun724]

he is really a baby whisperer.

[@AiliasFox]

:3 that's really sweet

[@bobbygirlingisathief]

If he doesn't ever make babies it will be a tragedy !!!

[@deannapennies]

awwww :D

[@sunnieheart1]

ohhhhhh so cute

[@FireflyFanatic3]

d'aaaw!!!
Who are the kids?

[@AkaBlackNight]

ooh so cute =)

[@justowlit9942]

I'm glad I found this,but who are these kids?

[@daniii37]

OH MY GOD. my ovaries just exploded. omg.

[@DebraCTrialByFireProductions]

This is so cute and funny. Then Nathan burps on the side and then tries to make it look like the little boy did it! What a con artist! LOL

[@OurGodReigns]

Oo!! I thought this might've been Nathan interacting with the children who played Rick & Kitty's babes in the grand finale! Who are these children lol?! Is it a "Make A Wish" thing or something lol?! Very absurd if so!! Is the Dad one of the extras? A spectator who was watching/stalking the cast outside the studio who got lucky?!! I'd love to know exactly what's going on here! Cute yes - the children and Nathan! The Dad's a little pushy lol! Maybe he's living vicariously through his children or maybe it's his Make A Wish experience lol! I just don't know what on earth's going on here??!

[@23vampireknight]

@fabiolando who are these kids???

[@MusicalMuse100]

Whose kids are they?

[@secondstarASMR]

Wait whose kids are these??

[@TheMarsKid]

my ovaries are popcorn

[@chanceofrainne]

I definitely just got a little warm in the ovary department.

[@Niccers_87]

Oh my ovaries! :')