I knew it was there  Though I tried to hide it  The feeling just kept on shining through  Haven't known you that long  So I try to deny it  But the feeling was much too much too strong  Could this be love  Deep down inside  Tearing me apart  I feel it in my heart  CHORUS:  Constantly, you're on my mind  Thinking about you all the time  I can't sleep no matter what I do  I just keep on thinking 'bout you  Why do I feel this way  When I know you have someone  That you're seeing each and every day  Should I play this game  Of just being your friend  When I know that's not where I want it to end  How could this be wrong  When the feeling's so strong  Tearing me apart  I feel it in my heart  CHORUS 2X  No I don't want to start no trouble  Between you and I and your lover  But I must tell you what I'm going through  Everytime you walk by I see love in your eyes