The best way to get your ex's attention is to stop acting out of the norm. You don't want to overreact in situations. Always keep your phone convos short and sweet and let him do all the talking. Don't call him let him call you. Just don't act normal, pay him less attention that you normally do, because that will shake him. He will think you are losing interest which can lead to cheating and he will do whatever he can to get you back. Also after you get him to think that you are losing interest, start dressing sexier than you normally do, that will really shake him