and fall off. Sometimes it doesn't pollinate, but it also doesn't close and fall off. These are interesting because the ovum tends to swell a little bit, but it doesn't really grow that much.
Tomatillos are harder to figure out. It's hard to tell how the fruits are progressing, because they are shrouded by a husk. The progression goes something like this: blossom forms, blossom opens, blossom pollinates from the other plant, blossom closes a little, the husk grows crazy fast and the rest is a mystery :) I hope the fruit is growing in there, but you can't tell.