No Sympathy for Kim at all. It's her own damn fault she got hurt.
I've read a lot of posts talking about "OH! Poor Kim, he just dumped her like garbage!" or "I feel so sorry for Kim, she was just a poor naive girl who fell for a guy and he just used her and left her" or "Zach Braff's character was such a jerk, he didn't tell her he was having a baby with Jenna" etc.......
Hmmm, lets see. Ok, she "didn't know he was having a baby with Jenna" But guess what? She knew he was with someone, someone for a very long time. So, that right there makes any "Sympathy for Kim" null and void, at least in my honest opinion. She involved herself in something she absolutely should not have. She should have been smart enough (And don't give me that "She was Naive" bull s*h*i*t! It wasn't her being a naive 22 year old,it was her being a selfish, horny college student who saw something she liked, even though it wasn't available, and decided to get it. With no regard for anyone but herself and her wants.) to say "You know what dude, you go and figure out whatever you need to figure out, but I'm not gonna get in the middle of this potentially sticky situation. I'm not gonna be 'That Girl.' And if or when you decide to breakup with your girlfriend, give me a call. But until then, peace the f*u*c*k out" Instead she says (As there about to seal the deal) "I Don't Care About Tomorrow" Showing she knows what she's doing is wrong but she doesn't give a s*h*i*t, she doesn't care who she's hurting, she's gettin hers. And then, in the office scene near the end, she says "You said you wanted to leave her" or something to that extent. Hey, guess what honey? Wanting to leave someone and actually leaving them are two VERY different things. "Wanting" to leave means their still with them, and even if they are having "issues" it's still none of your god damn business, and you should be smart enough to
A. As i said before, not involve yourself in something that could become a huge mess and end up hurting someone.
And B. Be kind enough and selfless enough to stop and think about the "Other" person in this situation instead of gratifying your own horny urges. Stop and think, "As a woman to another woman, how would i feel if this happened to me?"