mixed nationality

I met a guy about two weeks ago at a party.Now my parents are African ,Sierra Leonean to be exact and this was a Sierra Leonean party. He was very cute and danced for about an hour and at the end of the night he asked me for my number.I wasn't expecting anything to perspire from this encounter just a new friend that I would talk to for a few months and probably never see again.So I called him the next day and we spoke and found out we have a lot in common.We both like similar music and have been living in the U.S for about ten years and other petty things such as that. Hes really cool expect for one thing. He constantly makes references to the fact that I am so Americanized. But can you blame me? After 10 years I feel, act, live and breathe like any other American ; however that doesn't mean I am abandoning my African roots.I am not embarrassed by my culture and I embrace it and every aspect of it but I don't feel as though I have to shove it down anyones throat.He constantly comments on the fact that I speak English instead of krio or that I refer to America as my home, and to be honest I think its just desperate. I feel that if you have to force yourself into a certain role then its not real.He tries so hard to speak Krio and speaks it completely wrong and its just so obvious that hes forcing himself to be this dipiction of a Sierra Leone man. Well the point of this blog is to showcase the two sides of a delima I have noticed :

why do people of different cultures feel as though they must choose between where they come from and where they are?
Why do I feel as though I am American and view him as silly,desperate
and
why does,he see me as a fake and that conforming to an American lifestyle is betraying our culture?
Why can't we have both?
I'm sure other readers that are second generation can relate to me.