I was all down for this, about to find someone to submit to, when I decided I'd take a look at what the crush is going to receive. The wording in the first sentence put me off. I would change "Someone has a crush on you, but is afraid to take the first step..." to "Someone has a crush on you and is wondering if you felt the same way..." or something like that.
The wording there prevented me from using the service.
More importantly perhaps, if the crush doesn't know the specific email address I used to submit, how can it find me? It might be good to allow users to connect multiple email addresses to their account to allow for more matches.
The wording there prevented me from using the service.