I think it's probably because of their goals. They might have thought,"I'll ask her out when this is all done."And maybe because they thought love can be a distraction to their work.Or maybe the boys have so much pride they think they're just gonna end up being dumped.Well, it wouldn't hurt to try right? How about you guys? What do you think? Now I wish Arakawa-san is reading this. She doesn't know how many people would like to see Ed and Winry or Roy and Riza kiss.I wish there was a psychologist in the series,so that way Winry or Riza won't have a hard time thinking,"What do men want from women?" or Roy or Edward would think,"How am I supposed to impress her?"