please help! lmao

[la dolce jonae]

i really love this song every time i hear it on the hills but i dont know who sings it and im going freakin bonkerz....lol
it goes something like" it's the last time..blah blah blah ..lol
i dont really no the rest but i hope someone can help
it was after the part when whitney and lauren set up the teen vouge dinner and the new intern from ny came in and lisa love asked whitney and lauren to leave and the were eating in the fast food parkin lot!
please please help thanks♥♥♥