Facebook logging me out?

[A Guy]

I never go on facebook on my smart phone. I usually just go to facebook at home on my computer but there is no need for me to ever log in. When I get to work I go on facebook at work and do not need to log in, ever. However, recently I've noticed that when I get home and try to go on facebook, it requires me to log in again?

Does anyone know why? I never had my security settings to notify me when someone is trying to log into my account from another device, but now I've turned it on. Can it maybe be that someone is trying to log in from another device?? like a friend or something?

[Lahori Munda]

Maybe someone else logout your account and login from his/her account. You can check it from the Browser's history..