@Nerissa: I think Nerissa would be a good match for Edward, maybe? The two seem to be quite opposite, but Ed would find her interesting and would be curious to know more. As for Calvin, I think Rosalee would be good. They seem to be fairly alike, and this could maybe set off sparks (depending on whether or not he already has a love interest or not). Rosalee would adore his intelligence and awkwardness. :3
@Yumi: I think Yumi would be good for Edward as well. He is somewhat looking for a relationship, but can't seem to find the right match. She seems to be a very interesting person, and Ed would like that. I think Jake would be good for Suzannah, as enemies, anyway. I stalked noticed on his app that he doesn't like to be around people who think they are better than anyone, and that is exactly like Suz! I'm not sure about your other charries and how my charries would react to them, though
@Keith: I think Noah and Rebecca could be a good pair, perhaps on a love level, depending on what you want for him. They seem to have a somewhat same personality. I already know that Suzannah and Sandra have crossed paths before, and it didn't turn out great from what I can remember. Maybe we can get some sort of plot going between the two?