Need help with a SCRUBS episode?!

I need help finding either the name or the song at the end of the episode!. I only got to see the tale end of it but here is what I know!. It starts with JD making out with a stuffed dog!. From there he keeps getting pulled into his friends fights with their girlfriend/boyfriend!. At the end he goes off on them telling them that they dont know how lucky they are to have someone who cares for them while he (JD) sits in an empty apartment!. Thanks in advance!! Www@Enter-QA@Com

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