When do you know when you are falling out of love?

Is it someones hot breath when they are sleeping next to you at night?

is it someones attitude that all over a sudden begins to irk you?

is it the sneer your face wears when they call your phone?

When you have been in love for a long time, its sometimes unwise to fight the feeling when the shakes come on, when you feel jaded, disconsolate, dim, unexcited. This usually means you are irritably falling out of love with your partner.
This does not mean that the 'falling out' is as natural a process as falling in love. I guess it should not happen to you when you have 'worked on it' long enough, but when your heart says no, DO NOT ignore the signs.

Of course do not look forward to this happening, actually you wont know it is happening, but those who have been in love a number of times can quickly tell the dull feeling.

Your skin crawls when he touches you, the jokes somehow dont seem funny anymore!, the once intermittent requests for transport suddenly seem fervent. 'why do you ask for money all the time? dont you have a mother!?' you implore. Sometimes the instant bit lip/ignored puppy look he donnes doesn't even begin to incite some remorse in you, and your nonchalance toward his emotions suprises you.

His first reaction will be a well meant, solicitous quest to apologize for things he has not even done, but even the apologies are met with your lip smacking arrogance. His subsequent reaction after the first move has failed to work will be a grim defiance, a detachment from you, a perfunctory nod to your seemingly relentless castigations on where the juice decanter should have been left after he poured himself a glass! or something as banal as that.

Your sacrilegious attitude at this point is unforgivable.
His well meted out rejoinders are also unforgivable.

Its loggerheads! At this point it takes an older, tougher bird to know its time to extend the olive branch, sit him down and talk to him, tell him its time to water down your relationship to 'friends' status. To tell him its for the relationship's sake lest there wont be anything left, not even the spoils.

set him free, sit down and regroup for a couple of months and then jump onto the bandwagon again.