Wrth i'r haul fachlud dros yr aber yng Nghaerfyrddin, cerddodd Llywelyn lawr i'r traeth.

As the sun set over the estuary in Caerfyrddin, Llywelyn walked down to the beach.

Roedd y noson yn llonydd, gyda'r llanw yn cryn fachlud ar yr oresafoedd tywod euraidd.

The evening was calm, with the tide gently receding on the golden sandbanks.

Roedd y lleuad yn taflu golau arian dros y tonnau, y mynyddoedd pellennig yn gorwedd fel cysgodion yn y pellter.

The moon cast a silvery light over the waves, with the distant mountains lying like shadows on the horizon.

Roedd y golygfeydd yn ddelfrydol ar gyfer y dathliad arbennig oedd i ddod.

The scene was ideal for the special celebration that was to come.

Daeth Seren a Eleri, ffrindiau agos Llywelyn, i mewn i'r golwg o'r tu ôl i gornel tywodfaen.

Seren and Eleri, Llywelyn's close friends, appeared from behind a sandstone corner.

Roeddent yn chwilio am nod weddes ar hyd y traeth.

They were searching for a specific spot along the beach.

"Llywelyn!" galwasant, llawen a chyffro yn eu llais, wrth iddyn nhw roi eu cylchau i'r haul yn ei adlewyrchiad grisialol.

"Llywelyn!" they called, joy and excitement in their voices, as they let the rings fall into the crystal reflection of the sun.

Roedden nhw newydd ddyweddïo ac roedd noson arbennig wedi'i neilltuo i ddathlu.

They had just become engaged, and a special evening was set aside to celebrate.

Roedd Llywelyn yn llawen iawn dros ei ffrindiau, ond teimlai rhywfaint o alar am y newidiadau yn eu bywydau.

Llywelyn was very happy for his friends but felt a pang of sadness about the changes in their lives.

Roedd ofn y dyfodol yn ei hedfan, a theimlai'n ansicr am ei lwybr ei hun.

The fear of the future hovered over him, and he felt uncertain about his own path.

Ond penderfynodd, y noson hon, i beidio â gadael i'r ansicrwydd hwnnw rwystro'r dathlu.

But he decided, on this night, not to let that uncertainty hinder the celebration.

Yn lle hynny, penderfynodd wneud rhywbeth arbennig.

Instead, he decided to do something special.

Eisteddodd ar y tywod meddal, a gydag un symudiad, dechreuodd ysgrifennu neges gydag arswyd yn ei galon.

He sat on the soft sand, and with one motion, began to write a message with a thrill in his heart.

"Cymrwch gariad a chefnogaeth gyda chi wrth i chi fentro ymlaen," ysgrifennodd, gan deimlo ei ddwylo'n ysgafn wrth iddo ysgrifennu'r geiriau yn ofalus.

"Take love and support with you as you venture ahead," he wrote, feeling his hands lighten as he carefully inscribed the words.

O'i ferangle gododd a symudodd tua’r pâr cyffrous.

Rising from his seat, he moved towards the excited couple.

"Edrychwch," meddai Llywelyn, gan arwain Seren ac Eleri tua'r man lle ysgrifennodd ei neges.

"Look," said Llywelyn, leading Seren and Eleri to the spot where he had written his message.

Wrth iddynt ddarllen, rhai cynfasau'r llanw yn ôl, roedd symudiadau o lawenydd yn llenwi eu hwynebau.

As they read it, some ripples from the tide retraced back, movements of joy filled their faces.

"Diolch, Llywelyn," meddai Eleri, a'i llygaid yn olau â dagrau, "mae hyn yn golygu mwy nag y gall geiriau ei fynegi."

"Thank you, Llywelyn," said Eleri, her eyes bright with tears, "this means more than words can express."

Roedd barcud nos yn plymio'n isel dros ben, rhamant y gweld i amrwn.

A night kite swooped low overhead, the romance of the sight nearly overwhelming.

Rhedeg y tonnau'n dyner, roedd serenog wedi dechrau dŷsni'n uwch.

The waves ran gently, signaling the rise of a starry night.

Daeth gwen ar wyneb Llywelyn wrth iddo fagu dewrder o'r awel ymlon.

A smile appeared on Llywelyn’s face as he drew courage from the gentle breeze.

Roedd gwybod mai newidiadau fuelliannus yn eitemau canol, ond troes olwg y drefnyddiwyd y rhai hynny'n caer.

He knew that changes were inevitable, but viewed them as turning points that could be embraced.

A'r tafod o ddylanwad y ffrindiau yn hollleithiaf.

The influence of friends remained ever-present.

Roedd Seren, Eleri, a Llywelyn yn eistedd mewn cylch ar y traeth, eu clustiau yn llonydd i symffoni'r mor.

Seren, Eleri, and Llywelyn sat in a circle on the beach, their ears attuned to the ocean's symphony.

Llywelyn, mor deimladol, roed ganddo'r teimlad braf o bobl sydd, serch newid, yn aros yn driw.

Llywelyn, so thoughtful, felt a warm sense of belonging with those who, despite change, remained true.

Roedd y noson hon wedi ei siapio yn un o fonau fondigrybiol, fel y mynnent eu diffodd wrth iddynt olchi'n ôl, trwy bendelw serchiol y chwildiwydd.

This night had been shaped as one of remarkable bonds, as they resolved to finish their evening within the affectionate fold of their friendship.

Roedd ser y nos yn adlewyrchiad perffaith o'u bywyd yng nghanolog y byd, canolbwynt daith bywyd a naws, symbolaidd o'r cysylltiadau y byddent yn eu cynnal am byth.

The night stars were a perfect reflection of their lives, centered in the world, highlighting the journey of life and mood, symbolic of the connections they would maintain forever.