This is a little something I noticed throughout Final Fantasy VII and some other Final Fantasies. For some reason it's quite apparent that when there is a symbol between Cloud and Tifa in FFVII. Many romantic couples usually have the same theme or something close, in which they are no exception. Not just love, something else that when you see it, it reminds you of that character or characters. The symbol between Cloud and Tifa has nothing else to do with the game itself but these characters alone.
Another continuous theme that seems to be represented as a symbol between all the lovers in Final Fantasies is a major promise, a lasting promise that affects the relationships between the lovers later on in the game. I believe this even started before 7 and it continues all the way through 10, but it seems to be that Cloud and Tifa's promise stuck to me more than anything. The promise happens to them in an innocent and beautiful way, representing a relationship that will carry on. It was when they were little, and it was under the stars on a well. If you would like the dialogue from this scene please visit the transcripts section located here.
I bring your attention to the symbol of Cloud and Tifa. "The starry sky of childhood" is a major event between both Cloud and Tifa. The rememberance of the starry night back then, a reference to the complex past between them is often a reoccuring theme. It not only shows the beginning of what kind of past they had, it gives the audience the understanding that these two had a bond, and in the future we know there was more more to what the promise was. The adorable scene, were Cloud promises to be Tifa's hero, and protect her if she ever needed it.
But as Cloud and Tifa made their promise a symbol was made. They made their promise under the starry night sky. Much was used all throught FF7 between the couple. Like for instance, the issue of "the promise" was first brought up at Tifa's 7th Heaven (note the term Heaven which could also describe the stars they were under). When Tifa tried to convince Cloud to join AVALANCHE. She says to him "you forgot the promise too.." and Cloud tries to remember that promise made. Later the issue is brought back as a link to Cloud remembering his "real-self". Tifa tried to make him believe the night stars were real, and not just imaginary.
The starry night between them reveals an innocence of childhood, and a representation of Cloud leaving nibelheim. Cloud needed to know that the sky was real, and not fake. Asking her out to the well to the girl he liked was a major step for him. As the scene ends between them, a shooting stars crosses the sky as they sit on the well, offically bonding a promise made. The shooting star is not a very often thing in natural occurances, and in romance terms, a shooting star means love, romance, and a destiny that might be fullfilled later on in life. We know this, because Cloud and Tifa meet up again in Midgar, even through all what happened after, when Cloud dressed up as a SOLDIER to watch over Tifa. Then in Midgar ironically finds Tifa, and then joins AVALANCHE which unltimately tests their love, and the complexity of their past.
The shooting star is not the only thing that would represent eternal love, the starry sky in general is a major symbol of love. In theatre (or so I was taught), the color blue is the symbol for love, not red, or pink, not the typically colors we would think, but blue. Blue is the color, because blue is the color of the starry night, in which love usually happens under. Tifa's Computer Generated rendering (the offical artwork), with her on the well under the stars, that right away represents Tifa's character as romantic, and that her whole basis revolves around that night at the well, the stars, childhood, her past with Cloud.