There are no quick fixes to this. No mones will help as paradigmshift said earlier. Depending on how long this relationship was and how much you cared for her this could take a bit of time actually.
Heres my first tip. Forget about mone self effects and pills. You need to let your relationship die off in your head before you can go further with another female in a healthy way. The faster you can let it die the faster you will recover. Time to dive into yourself to fill that void. Forget other chicks right now as well. Cold approaching is your worst option atm until you recover. Trust me on this. I will explain later.
Make a list of goals. Do any of them have to do with her? If so scratch them off and replace them with more YOU oriented tasks. Hit the gym hard. I mean HARD. This is the number one way us men get over a breakup. Im not kidding here at all. Next fill some time with fun activities you used to like to do before she came into the picture. Go out with the guys, eat the shit out of some wings. Be careful with the beer though as it is a drug and can either make you angry or sad. Read some books, get some new hobbies, dive into work. This is the best path to IDGAF.. not mones or pills.
Ok here it is. Breakups are a battlefield environment. If you 2 broke up mutually she can remain neutral. If she was creeping or cheating on you with this new guy she is your enemy. Either way you need to take your power back from her. Only way to do this is for YOU to do it. No tricks. No games. You absolutely must show indifference here no matter how hard it is. Right now she occupies too much time in your head. Whether you know it or not she is feeding off this and taking your power. Every time you think about her you must remove her from your thoughts and ADHD her ass. When she pops in, push her out and go on to something else that occupies your mind. She is with someone else now and it stings. This is wasted time on your part and slowing your healing process down. Par example:
(12-25-2012 2:40 AM)Ozee Wrote: She already had a new Bf and every time I heard something about her with that guy, I can't help but feeling really depressed all day and just want to be alone.
This is what is depressing you and keeping you from recovering.
Pay no attention to what you hear. Do not seek her out nor the information pertaining to her. Cut off mutual friends atm. Do not look at her fb profile or try to hack her email. Have no contact with her at all. No calls, visits, sex (and yes this happens alot) texts, etc.
Do not let her string you. If you do this plan on more pain for a very long time. True story. I warned you. Her part in your story is over now. Fire her from the position she once held in your thoughts. If you cannot do this on your own, forms of therapy might be of use. NEVER talk about her to anyone else. Find ONE person you trust and vent. Only ONE. If this be a professional, friend, family member. One.
The reason you cannot move on right now is you are in pain.Cold approaching is no good here bc girls can smell the breakup on you from a mile away. Takes a bit of work to scrub this stink off and usually depends on who was the dumper and dumpee. Some chicks will pity you, some will see you as beta, some will refuse to be your rebound until you heal properly. Dig up some old friends. Call an old FWB see what shes up to. Call a female friend to spend some time with even as friends. Go to the females you already know that preferably do not know her, or like her. Some advice may say let her find out you have been seen with other girls. This doesnt work man. It makes you look bitter and drags on the drama. You have to let her go completely. When you run into her after you heal properly you will see what I mean here.
IDGAF comes from within. You would be a robot to say you went from giving a shit about her to IDGAF. You say it was 3 months ago? You are behind in your healing and the aforementioned is why. Man up. Heal properly. Move on.
Hope this helps you out some and lessens your desire for a quick fix. The best quick fix is to go apeshit in the gym and jack up your endorphins. This is what you need the most. Not mones or pills.
EDIT: I did not want to get much into this psychological aspect but I figure it might clear things up a bit. 7 stages of grief.
1. Shock/denial
2. pain/ grief
3. anger/bargaining
4. depression/reflection/loneliness
5. the upswing
6. reconstruction/rebuilding
7. acceptance
Based on your writing you are hanging between 3 and 4. Bargaining and depression. You have a choice which way to go here. Get through 3 and 4 asap, or backslide into 2 (pain). Dont bargain just to get more pain. Heal properly and get to the upswing. Its all gravy from there.