Yes, these're good points, but in my theory, these're not scenes where Cloud confesses his love to Aerith.

Massive (SPOILER):If You read "On the Way to a Smile - Case of Tifa", then in the first part Cloud starts to open up to Tifa, I think he starts to feel something new towards her. Those are just the first steps to "fell in love", but he makes them.
But after that, he's reminded about Aerith's death, he fell in depression, and starts to feel guilty. I think his guilt is not just about the death of Aerith, but about the thing that he started to feel something romantically towards Tifa, and thus he started to abandon his love for Aerith. He seeks her forgiveness from here on, not eternal love with her. Remember the scene where he tells Aerith what he wants: "I want forgiveness...Yes, forgiveness". He clearly states, that he wants her to forgive him, and thus he can move on with his life (and maybe with his new blooming fellings for Tifa). It's clear that Cloud not say anything like "I want to be with You", or something that states his feelings for Aerith.
So all in all, I think Cloud wants to get over Aerith, but he can't do this without her forgiveness. He will always have a part in his heart for Aerith, but not all of his heart as a "one and only" love.

Well, it's just my theory.