well that's a difficult question. but it could be because you see him or her as a best friend or brother or sister. and you care too much about them to date them. You want them to talk softly or not...
Question is inconclusive.... Everyone wants to be loved, in fact we all are whether you like or not. Some people dont know what love is and well do anything to try to find it....
There are several ways. You could ask the person nicely, you could put a gun to his or her head and try to force the issue, you could use physical force, you could talk to the person and convince him...