<human>: Can you provide a brief rundown of the text in within 3 sentences?

me (male 21) her (female 21)

 I met this girl about 7 months back.  We hit it off as friends, and occasionally hung out.  But, about 2 months ago, something clicked and we started dating.  Not a relationship, but dating; hanging out, staying over at eachothers places, having sex, going to concerts together...pretty much EVERYTHING that constitutes a relationship, just not calling it that.  

She is amazing, smart, beautiful, and says im amazing, says its the most attached shes ever been to someone.  We have both said that we are not seeing other people, and I believe her.  She stays over at my place 2 or 3 times a week, and I stay over at her place about once a week, so overall we spend a good deal of time together...not excessive or anything, and I dont feel that either of us have become clingy at all.

Here is the rub.  She is (slightly?) addicted to her phone and texting.  I know she has LOTS of friends who are guys (many of which I know for sure only hang out with her because they want to get in her pants).  

When she is with me, she is always on her phone.  Never seems to put it down.  She shows me genuine affection, but always goes right back to the phone, and I know that a lot of the people she is texting are her guy "friends." 

What bothers me is that when she is hanging out with these friends, she NEVER texts me, or calls me, or anything, but when she is with me, she doesnt stop texting.  She even picked up the phone to respond to a text WHILE WE WERE HAVING SEX, which i kinda flipped out about.  (Insert "are you fucking kidding me" face here...)

I am going to talk to her about this.  The advice I would like is about HOW to approach it.   I dont want to tell her to not talk to her friends while she is with me because I know that is selfish...im just at a loss here.  Help?
<bot>: Dating a girl.  When she is with me, she texts other people non-stop, but when she is not with me, she NEVER contacts me at all.  It bothers me.