Listen to her problems, try to get to know her better, and spend time doing friendly activities such as going out to eat and watching movies. [substeps] Don't rush to gain her as a girlfriend or else she'll view you as intrusive and only using her as tool for your own enjoyment.
[header] How to steal a girl from her boyfriend [title] Build trust. [step] To do this, spend time with her when you can. The idea is to treat her as any other female friend.