Are girls, really this self centered?

So there's been a good handful of recent occasions that reveal my girlfriend is a lot more selfcentered and oblivious to others feelings, more than id like to believe.
 
We started smoking and drinking together and i'd have her stay over at my place. Almost every time we do either she becomes completely obsessed with me and can't stop touching me and cuddling me and asking me questions like if i love her, when clearly i do. Either that or shell tell me an incredibly long and confusing story that she isnt able to put into words correctly and i spend 10 minutes or so completely lost and amazed that someone thinks its appropriate to talk for that long without hearing comments from the other half of the conversation and that her story is so enthralling im going to sit there and listen to it all the way through when it's a story i've already heard, or is just legitimately pointless. She once decided it was blow job time for me, then when her head reached dick height she told me three fucking stories about customers at her work, something funny she just thought of, and something else i cant even remember because it was so irrelevant. 
 
Our sex is really really good. were extremely comfortable around one another and we both always end up pleased. But so many times shell have to say something insanely obvious and phrase it as long as possible that it takes me out of the moment and i hardly even want sex after. 
 
I did a lot of favors for her today and she knew it and was going to make it up for me with some good sex, but after we smoked she just kept talking about things and laughing at nothing, and everytime i got her going a little with kissing shed stop everything and start coughing. I recommended sex later after she calmed down, and she said not to let her sleep without me getting sex. Shes asleep in lap an hour later and no sex for me. I just feel like a lot of what we do is centered around what she wants ultimately and im curious if all girls do this and i should just get used to it? 
 
Should i talk to her about it? Ive spent a great deal of time establishing she is the center of my world, which she is honest to god. but sometimes i just need her to tone it down some and focus on me a little. Is that too much to ask for or am i the one being selfish here?

 

One more point. She cannot stop touching her phone. Im sort of a quieter guy, so I like to be heard when I speak because I don't spend all day blurting out everything that comes to mind. So i'll bring up something that I think is worth bringing up and shell be on facebook, or tumblr, or playing some stupid game where you shoot colored balls at other colored balls, trying to get other balls with pictures of bananas on them. Bananas! It makes me feel less interesting than a banana.

 

 
I've sort of wanted to. The thing is I'm much more of a pro at it then she is. To her this is all new stuff and it's still fun and exciting and fresh so I don't know how much shed like that. My girlfriend does the same for me I know she does love me immensely and I love her back, I just dont think she realizes how much she talks about herself and how much she can dominate our free time together. 
 
That is a good idea though and I think some better moderation on our intake could be a great deal of help. Congrats on the happy relationship though man. Generally my girlfriend and I are extremely happy together and we work things out well but lately I've just been a little irritable and she's been getting under my skin a tiny bit, which i feel is natural from time to time.