Time really is the best healer.
I got dumped about 2 weeks ago. One moment I'm looking at engagement rings, two hours later I'm being told it's over. She miscarried with my child only a week or so before that. Now she's sleeping around with other blokes.
But, this is about selective memory. Because, I've had to deal with the end of a relationship countless times and what I fail to remember is - and I'm guessing other people do as well - it felt exactly the same last time. In other words, what you are going through is NOT forever, you HAVE to remember that, it's so crucial.
A week from now you will feel better than you do today. A month from then you feel better than you did at that point, and so on.
But I have to agree with what's already been said, drinking won't help - it will prolong what IS an inevitable healing process.
Also, right now, regardless of how you feel about her (I know, easier said than done
), stay well away. No contact whatsoever - especially now she's started sleeping around.
No matter how "justified" or "legitimate" her reasons for breaking up with you are, the fact still remains, a person has chosen to stomp all over your feelings, and what's more, a person who you trusted wholeheartedly. She doesn't deserve the privilege of hearing your voice.
Oh and by the way, these men she's sleeping with? They mean nothing to her, be rest assured of that. She's doing it to get YOU out of her head. So any images of her that you may have in your head - or even the image she may be trying to put across - of her being 100% happy... it's nonsense.