If you are unsure if a certain person you are dating is right for you then check out a love calculator online to see what your chances of a lasting relationship with that person is.  The love calculator can calculate the probability of a successful relationship between two people.  A love calculator is fun, informational and affective in letting you know if you are in a losing situation or with your perfect match.  Sometimes love is blind when you are first dating and the love calculator will give you that assurance for the future or not and be just what you need to know if this person is right for you.