oho,
Have faith Vidushiji, i think you need a breakup for sometime, in this scene if you keep calling him , he will take it otherwise n think that you are following him, let him go to some distance, but keep eyes on him,stop calling him for sometime, after sometime he will definitely feel loneliness, he is away from his home i am sure he is under a great pressure to work hard, are you calling him too often ?
I know girls do that, they keep calling always, & basically they utter the happenings of all the day, which make no sense to boys, give him sometime to relax...
please don't call him when he is at office, better to call him once in two days,
"without a separation boys can't understand the true love" but saare ladke ek se nahin hote, let the separation period mature, whenever he will be tired through hard office work, he will need you, let him develop a 'need' for you in his heart.