What is your opinion on this situation?

Alrighty, So i met this guy named Ryan. He is a very sweet boy. I met him on a friday, then the next day on saturday he told me he liked me. We talked again the next day on sunday and he asked me out. I knew it was going really fast but I said yes anyways. Cuz if I had said no, I would have ruined my chances incase he turned out to be a really great guy. So I was a little excited cause hes really cute with a great personality....SO far. the problem is I started going out with him 2 days after we met and yesterday on sunday it was our 1 week. I've been getting to know him more but hes kind of obsessed with me. its odd. I havnt dealt with someone being this much obsessed with me before. He does really sweet things and tells me he loves me every chance he gets, but ive only known him for like 10 days. on friday, he just got back form the states and he said "sorry I left without saying a proper good bye, I wanted to tell you how I feel, do you want to know how I feel about you?" So I was an idiot and just said "Yeah i dunno sure I guess" so he said " I love you so much, the moment I saw you I fell instantly in love with you. I could have chose anyone but my heart sank for you, and now its settled with you. I like to let my heart fall for anyone it wants, and Im glad it fell for you. No matter what I will always care about you more than everyone and, we may fight sometime along the line but no matter how mad you may get at me, like it or not, im gunna love you forever and ill always be here for you" and there was alot more cuz there was like 5 paragraphs but that sums up most of the more important stuff.. I told my friend about this and she said hes to infatuated with me and that Hes a creep ! dont fall for this its unhealthy! But i dont know what to do? I would love some opinions or advice. thatd be terrific..and sorry for writing a book =)