Whoaa....going above and beyond by doing every episode I see. First of all, good job. But a lot of what you had were moments, and not development(which is good too). A lot of it is "Freddie has a crush on Carly", "Freddie loves Carly", "Freddie believes in love at first sight". Freddie confesses his love for Carly all season one since the beginning. It didn't really change his crush on her until mid season 2. This makes sense though, not every episode is going to be a development between the characters. Also regarding the iChristmas one, Carly has known that Freddie has a crush on her since the very beginning. I mean, the boy makes it quite obvious, doesn't he? I think for iChristmas it would be more of jealousy, since in this alternate universe he was dating somebody else, which did upset Carly. They won't break everything down to have one milestone of development within every individual episode. Other than that, the development is (somewhere) in your post.
Also if he only wanted to kiss Carly in his life, why would he kiss Sam?? Due to everybody teasing him? Wait, when does Carly get jealous in iBeat the Heat? Oh one more thing...Freddie has confessed his love for Carly since the beginning, every time she has said no(well except iSYL), and then he would be okay with it and try again. He's not scared of rejection. It sounded like he was talking about Sam only, and not himself. If anything, he would be telling her to put her feelings out there because he has done so for Carly and maybe one day Carly will fall in love with him(hey maybe I don't suck at doing these).
IDK it's like 2:30 I need some sleep.
I'm going to get back to this one though, because for some reason I think if you combined parts of yours with parts of teenjs it could be the perfect speculation.