What to do

I find myself forever confused by love.
It makes me rater paranoid and it bothers me, a lot. Is that how it is supposed to be? Am I right in being so obsessed about a person that he crosses my mind frequently? Is this right?
Today I read a note saying He loved me "To death" but I have no idea. Was he kidding? did he mean it? it drove me nuts all day.
If my love is unrequited it is no big deal, it's not like it hasn't happened before. I'm sure I'll move on. Yet that spark of hope glimmers like when a piece of gold catches the sun, that "What-if" scenario plays itself over and over in my mind. I feel like an utter fool at times, but the prospect of him having feelings like I do just instantly makes my life that much better.
Should I approach him about this note and risk seeming like a love crazed psycho? or do I just sit and let an opportunity pass by? there are a multitude of pro's and con's to each choice.
most likely I'm gunna be a giant loser and sit on my laurels, but who knows? stagnation tends to frustrate me to the point of taking action with gusto.