SweetPea, you are so passionate. You sound just delicious. Yes, "lets' be friends" is codeword for "we can keep being friends if you don't mind me sleeping around with other women, cuz I already have my eye on a new one". The good news is that with all that passion, you get to enjoy the High High's that come with emotionally-charged relationships. The bad news is that you will also experience the Low Low's, like you doing now. These emotional High/Low's do not come and go quickly. In fact, it usually take 2 to 3 times as long to get over somebody as the amount of time you enjoyed with them. For example, if you were with him for 6 months it will take you about a year and a half to get over him. Lucky you, though, is he wasn't your Twin Flame that wasn't smart enough to stay with his one true love. Sadly, that takes your entire life to get over, and your best bet is to try and find him again in the Next Life (however you define that).
So, chin up. THe first step is realizing that you will be miserable and lonely for many months to come. And then eventually you will find you next new ex-boyfriend ans start all over again!
"Hearts will never be practical until they can be made unbreakable."