I would go with "I would try asking them why they don't want to talk anymore" however the OP situation would be different options.
I mean I know my good friend long enought that he wouldn't "suddently" stop talking to me unless randomly. It's a very high that that I would of started something bad to bother him in the first place to suddently want to stop being my friend. Either way it will simply lead to just let it be and just give him space (well also apply to me aswell).
None the less my best friend does mean alot to me so it will shatter me if it did ended over something.
I mean I know my good friend long enought that he wouldn't "suddently" stop talking to me unless randomly. It's a very high that that I would of started something bad to bother him in the first place to suddently want to stop being my friend. Either way it will simply lead to just let it be and just give him space (well also apply to me aswell).
None the less my best friend does mean alot to me so it will shatter me if it did ended over something.