(maybe I should add those too?) and here we have a quote. It uses the verb rendre and gerunds (en _ant). If you want to learn more about the gerunds I suggest: http://french.about.com/od/grammar/a/presentparticiple_2.htm
they miss each other while one of them is in London. It includes verlan (meuf), an informal contraction (jreviens – je reviens) and philo, which is short for philosophie.