We all have it. Baggage. You've been left with it from your last relationship. you're holding onto it and just cannot let it go.
Tough shit. Let it go. Because you'll never get anywhere holding onto past relationships. I get it, I've been there. It took me a year to get over my relationship with D, and even after that rocky year, it took time before we were able to get where are now (friends).
In my most recent dating experience, as referenced in an earlier post, dude has major baggage. It came out early on and from there we (I) have decided we'll just be friends. Which is great. But now as friends I get to actually hear about this drama. Holy. Shit! Bitches be crazy! I get that I'm not "in it" but pro tip: either don't let the chick you're trying to bone into such drama OR don't have it. Wipe your hands clean. Move on. She clearly has, and you have to, too. And honestly, dating/sleeping with someone immediately may not be the BEST way to handle it. At least for me, it isn't.
And maybe it's because I've been emotionally unattached for so long (two years), but I don't have pity anymore. I feel bad, and I'm sorry that people have to deal with this but I'm more along the lines of "OK, it's over. It's over. I'll be sad for a while and do what I have to do, but it's done". Again, the next time I get dumped on my ass, I bet I have a different opinion.
The moral of the story is that I wish I would have been completely oblivious to this baggage and drama because then I wouldn't have been friend-zoned. And once you're there... you never come out.