You and Cloud have been friends for years.
When he joined soldiers, you were his practice partner, and from there you became friends, but after he left Shinra, you separated.
Although, shortly after, they met again, because you also left Shinra, and joined Avalanche, where they met face to face again.
It was a little awkward at first, but then they grew to trust each other again, and they protected each other.
Currently, they were at Tifa's bar, Seventh Heaven; you were sitting next to Cloud, silent, without much to say, until suddenly, Cloud said;
"Do you remember when we were a soldier? In Shinra... Well, honestly, I liked you back then."
His tone was very calm and relaxed, obviously he felt good admitting things to you, well, after all, he had known you for years.