my girlfriend decided to end our relationship in november 2008. until now, i cant control my emotion everytime i think about her. even if we have not been seeing each other like what others suggested, my mind constantly reminisces over our relationship. every time this memory comes to me, i feel suffocated, chest pain and as if my head is going to explode anytime. this feeling is killing me. i have tried many methods including keeping myself busy with work and spending time with others. those didnt work at all. i keep finding myself sinking in the imagination that perhaps we can be together again. please. can someone give some advice?