I think it was cleverly written in the OG - this scene with his mother - because even if you're lead to think it's about Aerith, Cloud then answers "not interested", which is a big enough hint by itself. Then when you replay, it adds value because you (should) know by then the twist, and that he loves Tifa, so that's why he answers that way to his mother.
Here in Remake we don't have his answer, but we do have the context of ToTP which adds layers. And also the fact that the music playing is similar to the promise one, and that Cloud seems to have stars reflected in his eyes once he awakens - only to go try to go back to Tifa then. Remake adds a lot of layers to this scene that make his "not interested" not really necessary if you look at what he's doing and how it's presented, unlike the OG which was more limited. But the idea behind is, I think the same: the angle looks clerith, but it's an illusion, and cloti hides underneath. It works like this for both the OG and Remake.
So from the start, I feel that this scene was meant to hint at Tifa all along for those who paid attention.
