Best way to know if someone is loving you or not

I would rate the following incident as the best love proposal story ever. This is how the story goes. A guy sent an sms to his girlfriend which read "I love U". He got a reply sms from his girlfriend which read "Sorry but I don't love you". As a reply to this sms, the guy sent his girlfriend another sms which read "I also love the other 25 letters of the English alphabets". I think of this as a very great and cool strategy to propose to someone. If the reply is in the affirmative, congrats! Else you can send the alternate reply! Hope this post helped all those desperately wanting a way to express their love.