Sure, I can help you write a song on acoustic guitar. Here are two verses and a chorus for your song, based on the story and mood you provided:

Verse 1:

`I was walking down the street on a sunny day`
`When I saw you coming my way`
`You had a smile that caught my eye`
`And a style that made me sigh`
`I didn't know what to say or do`
`But I felt a connection with you`

Verse 2:

`We started talking and I felt a spark`
`You had a laugh that warmed my heart`
`You told me about your dreams and fears`
`And I felt like I've known you for years`
`I didn't want to say goodbye or leave`
`But I knew we had something to believe`

Chorus:

`You're the one I've been looking for`
`The one who makes my heart soar`
`You're the one who makes me smile`
`The one who makes it all worthwhile`
`We met by chance but it feels like fate`
`You're the one who makes me celebrate`

 Here is a melody for the verses, using the notes C, D, E, F and G:

Verse Melody:

`C C C D E | E E E D C | C C C D E | E E F G G`
`G G G F E | E E E D C | C C C D E | E E F G G`

Here is a possible chord progression for the chorus, using the chords C, F, G and Am:

Chorus Chords:

`C F G Am | C F G Am | C F G Am | C F G C`
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