I do not believe that there is a wrong type of love. Since when has it become wrong to love a person? We are all free to express our feelings. Personally, I would say that love, in whatever way it is expressed, is one of the purest forms of emotion that one can feel towards another.
However, it may become complicated in some situations. For instance, you may be in love with someone of different religion or race or ethnicity. But I do believe that we should not be dictated by such things, especially if what we feel towards the person is the genuine kind of love. In fact, there is also nothing wrong in loving someone who is already in a relationship or is already married. What is wrong and unethical is to actually commit into it.
Remember, we all deserve to be loved. And to be loved, one should also know how to love. So, do not let other people's judgment dictate you of what you should or should not feel.