1. occurs when an individual is screwed over by someone he thought he could rely on in the most reprehensible of ways at the worst possible time, with the least possible warning. Generally occurs after the offending 'friend' has recently reassured you they would never do any such thing. The offending individual in a situation-loggie generally justifies his actions by claiming he has found happiness.
2. The situation that occurs when an individual is willing to sell out all his friends and various other commitments abruptly and with no warning for a girl he has never met. Can also be used to describe situations involving people who generally put their fledgling relationships before their friends instantaneously, regardless of if they've met the person yet or not.
1. "Uh oh, fred is texting that skanky girl i knew in college who lives in Idaho. I think we might end up having a situation-loggie on our hands."
2. Yolanda promised me she'd be my roommate when I put the deposit down on that apartment. Then she ran off with the maintenance man who showed us the aparatment. Fuck if I saw a situation-loggie coming.