What's the most common reason for u to lose feelings for a girl/boy?

[LightsOff]

Time and personality.
Time: I might lose feelings over time if nothing is happening between us, we barely talk at all and I'm getting bored of it.
Personality: if I find something out about him that I didn't know before, something that is a deal breaker to me. Like if he's a drug user or criminal, or if he does/says stuff I consider to be rude and disrespectful. Or if he hurts me somehow.

[soccerchick4eva]

Not being committed, or didn't truly have feeling in the first place..

[cinderelli]

If they become cocky and I feel they are flirty with everyone..

[Viking111]

Depending on how much feelings I have for the girl. Usually I start losing feelings for them if they start sounding uninterested.

[abc3643]

They don't express interest in me.

[MrMafioso]

Attitude or she really shows she doesn't like me.

[Anonymous]

Waking up with a hangover.