http://www.allexperts.com/user.cgi?m=6&catID=1797&qID=5001685
Michael DePaula is da man
Not that we didn't already know this but as I said before, I like having an outside source confirm.
So let's see
CONFIRMED ROMANCE:
(FFVII Ultimania Omega, pg. 15; Cloud's profile)
最終決戦を前に一時解散を宣言し、飛空艇に残ったティファと想いを通わせる。
"Declares that the team should dissolve in the final hours before the final battle, and communicates his feelings together with Tifa, who remains behind at the airship with him."
(FFVII Ultimania Omega, pg. 27; Tifa's profile)
クラウドの提案で一時解散することになるが、飛空艇に残り、クラウドと想いを通わせる。
"When Cloud proposes that the group separates temporarily, she remains behind at the airship and communicates her feelings together with Cloud. "
(FFVII Ultimania Omega, pg. 27; Tifa's profile)
ティファのクラウドに対する好感度が高い場合、飛空艇に残ったふたりは、互いを求める気持ちを確かめ合う。
"If Tifa's affection regarding Cloud is high, when the two stay behind at the airship, they will confirm that their feelings of desire/wanting for one another match."
(Crisis Core Ultimania, pg. 33; Tifa's profile)
クラウドとは物語の終盤に想いを通わせ、「AC」「DC」の時代は一緒に暮らしている。
"She communicates her feelings together with Cloud in the final stages of the story, and in AC and DC they live together."
(FFVII 10th Anniversary Ultimania, pg. 118; pg. 120 in the Revised Edition; story summary)
残ったクラウドとティファは、互いへの想いを打ち明け、確かめ合う。
"Cloud and Tifa, who remain, reveal their feelings for each other and confirm them to match."
(FF 20th Anniversary Ultimania File 2: Scenario, pg. 232; main body of FFVII's story summary)
そして、ふたり、きりになったクラウドとティファは、残された最後の時間で互いの想いを打ち明け合う。
"And when Cloud and Tifa remain behind alone, in their final hours, they disclose that their feelings for each other match."
(FF 20th Anniversary Ultimania File 2: Scenario, pg. 394; "For the One I Love" page)
「VII」最終決戦前夜に
ティファのおかげで自分を取り戻したクラウドはセフィロスとの最後の戦いを前に言葉では伝えられない想いを彼女と確かめ合う
"VII - The night before the final battle
Thanks to Tifa, Cloud regains himself, and before the final battle with Sephiroth, without using words, he confirms with her that their feelings match."
DOESN'T SAY WHAT FEELINGS:
(FFVII Ultimania Omega, pg. 198; story summary)
大切な人の待つ場所へと仲間が散っていき、ふたりきりになたクラドとティファ。残された最後の時間でお互いの想いを打ち明け、そして……。
"When their companions disperse to the places where people important to them await, Cloud and Tifa are the only two to remain behind. They reveal their mutual feelings in their final hours, and......."
I think that speaks for itself