I have already published Love Approach of Project Selection on my blog. The same approach can be used for selecting your Valentine. For that matter term Love can be expanded as follows:-
L- Look who is the Person
O- Observe the person for proper knowledge about the person
V- Verify the shown behaviour
E- Embrace or Escape Decision on the bases of above three points.
This approach is being used by HR departments of almost all organisations for selecting staff for key positions. You can use it in your personal life also to have some lasting relationships.
Hope you all love to use LOVE approach in your life for various purposes in future!