Joke in spanish explained! Is it love?

hace 8 años

>>>Te amo 
 I love you  

>>>¿Cómo sabes qué es amar ? 
How do you know what is love? 

>>>Porque cuando pienso en ti no puedo respirar
Because when I think about you I can't breathe

>>>Eso es asma 
That's called asthma

>>>Bueno entonces te asmo
Well, then I "asthma-you"