彼女が、佐藤君と結婚するなんてありえないよ。

There's no way she'll ever marry Sato.

彼女(かのじょ)が、佐藤(さとう)君(くん)と結婚(けっこん)するなんてありえないよ。

Kanojo ga, Satō kun to kekkonsuru nante arienai yo.

彼女 (かのじょ)

she; her; her; girlfriend; sweetheart

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

君 (くん)

Mr (junior); master; boy

と (と)

if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)

結婚 (けっこん)

marriage

なんて (なんて)

such as; (things) like; exclamation

あり得る (ありうる、ありえる)

possible; likely; probable

よ (よ)

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: ジョ、ニョ、ニョウ、おんな、め

Meanings: woman, female

Reading: サ

Meanings: assistant, help

Readings: トウ、ドウ、ふじ

Meaning: wisteria

Readings: クン、きみ、 -ぎみ

Meanings: mister, you, ruler, male name suffix

Readings: ケツ、ケチ、むす.ぶ、ゆ.う、ゆ.わえる

Meanings: tie, bind, contract, join, organize, do up hair, fasten

Reading: コン

Meaning: marriage