Have you had really bad experiences or guys that totally suck? B/c that right there will make you say "you know what, screw it. I hate love and it just really doesn't exist!". I have to say I"m very harsh about love right now. But its b/c of I"ve treated bad lately. But all in all I still believe in love.
Do you really like this guy? B/c if you do....I'm afraid that now he'll feel like there's no chance and he might leave.
Maybe just have a heart to heart. I'm afraid if you don't, he might just say "there's no need of me being here."
Also, I agree with whats already been stated, are you in denial? I know thats hard to admit - but it could be a factor.
If he's a good guy, you're gonna wanna hold on to him. Unless you really don't care. So maybe just have a heart to heart and express your concerns and your thoughts on love. As long as its not "love doens't exist and its stupid"
GOod luck girl... let us know what happens