What song does mimi sing with roger in Rent?

The monologue can be anything. A good one to use is this:

"The heart may freeze or it can burn. The pain will ease if I can learn. There is no future, there is no past; I live this moment as my last. There's only us, there's only this. Forget, regret, or life is yours to miss. No other road, no other way. No day but today."