Pretty easy to guess... her boyfriend thinks she deserves better so he keeps trying to drill it into her head that she should leave and find someone else ("Why are you trying to, to make me leave you?") even though he still loves her. But she loves him completely and refuses to find anyone else, which is, obviously, the "I want nobody, nobody but you. How can I be with another? I don't want any other" part. :)
Pretty easy to guess... her boyfriend thinks she deserves better so he keeps trying to drill it into her head that she should leave and find someone else ("Why are you trying to, to make me leave you?") even though he still loves her. But she loves him completely and refuses to find anyone else, which is, obviously, the "I want nobody, nobody but you. How can I be with another? I don't want any other" part. :)