Why does my female friend call her boyfriend "someone" to me?

Anonymous
Im close to a friend of mine and she knows that I like her too lol. However, she has this boyfriend of one year but anytime she refers to him, when she does which isn't often at all compared to how other women talk about their boyfriend, she refers to him as "someone". She came over yesterday and showed me a gift and said, someone bought this for me...I know that was him but why does she do this? I even told her a long time ago that she can call him by name in which she did but now she's doing this again. Why?

Not a bad question to really answer. Best answer will be rewarded as such so no silly answers please
Updates
+1 y
ok ill update something: Weve known each other for several months so she's been with this guy for like 4 months prior to her and I meeting. We notice that we share a lot of common traits and desires.Also I notice that she feels comfortable coming to apt by herself. Last time she brought food for me. She quick to give me gifts of things from her home that's her own possessions such as her ring, vid games, or favorite book etc. She calls me like every other day or wants to Skype. We usually get along
Why does my female friend call her boyfriend "someone" to me?
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