Is he "the one"?

I don't know why there's such a lag between the time that I meet someone and the time that I fall for someone! We have been going out for 3 weeks now and he's suuuuuuuuper nice and I'm attracted to him .... but I don't know what's wrong with me..... my heart doesn't feel like stepping in the game! I know I'm stressed out with school and all.... but I need my heart to start participating before I lose him... I really enjoy hanging out with him.... and other things ;) ..... but maybe the fact that he's too nice reassures me to much of the way that he feels for me which as a result gives me too much of a peace of mind ..... I'm going to meet his mom on Saturday and he's told me to dress to impress... I mean WTF! It's been less than 3 weeks but I think he's serious about us..... he's a major pessimist! He's different.... he's a scorpio! He has never been in any kind of a relationship at all.... he's so nice..... I love being in his arms.... I didn't see him all day today but I didn't miss him! I have so much sh*t to do..... midterms are coming up.... assignments..... work! Hope that I can balance it all...... my life has improved..... I am trying to do things other than studying..... compared to last year at this time, I'm completely a different person!