asleep

I use RTC from bios to boot to my ubuntu so as to download(done in cron) from 2-8 everyday.In between there is this login.How can i schedule a login.I don't want to remove login,as the last time I did it,one of my cousins accessed my system while I was asleep and as it was linux,messed up my...

Suppoes one imagine that your Gf or your wife have split personality and they do not know about that. will it be cheating if you love the other part of her? i was half asleep when this crossed my mind. what do you have to say?