DONT DO IT, coz if you dont like him now, you will break up with him for sure and may be break his heart!!! I am sure you will meet your love soon, the same was with me when I was 17. I dated a guy coz thought I had to have serious relationship, so I dated that guy whom I liked..but he didnt make my heart flatter as you wrote...but he loved me a lot...in the end, I broke up with him...poor guy...and then just in 3 monthes I accidentaly found this guy, who made my heart flattered and gave me fever when I just thought about him (ina good way) we are together for 2 years now =)
so, dont be in a rush...just let it go and you will meet that right guy for you =)
good luck