It depends on the reason as to why we stopped talking. If they have said hurtful things about you then it's not worth talking to them ever again :) I'd just move on and ignore them. Even if we are in the same class. I'd say hi but that's all :)
Clear things out... coz maybe u loose a very nice friend just becoz of these misunderstandings...
if u feel that he/she is worthy enough then talk n clear things out !!!
me and my friend had a bit of a tiff, i apologised what i said numerous times and she did accept and said forget it even happened, but she hasnt apologised for what she said. i havent held it against her and do make conversation with her but it always feels like its me whos making the effort and not her, so i've kind of given up and just declared it has her loss.