Secret Crush is a malicious browser hijacker.  It is initially installed as an add-on for Internet Explorer.  It runs silently and in the background.  This hijacker will take over your settings and change your homepage to secret-crush.com.  Once you are at this site, you will be bombarded with advertisements.  In addition, you will be told that you have a secret crush.  This will lure you in to pay a fee to find out who your “secret crush” is.  This malware will prey on the emotions of its users.
This junkware is a security risk to your computer and it is highly recommended that you remove it as soon as possible.  There is an anti-spyware program called SpyZooka that specializes in getting rid of this sort of problem.