When they eat your last bite of food. You have literally manicured that last bite. You saved the best piece of this, the best part of that and you saved it all for that perfect final bite. Then, what does this b*tch do? This b*tch swings in and noms that delectable wonder. What a terrible soul this human of yours has.
They lie when it's convenient. The issue doesn't even have to be particularly serious, but this lover of yours just lies like it's their job. What's terrible about this is that little white lies only make the big, dark lies all the harder to notice. You're living with a snake.
They don't trust you. No matter what you do, what you say or how are you try to convince them otherwise, they always assume you're lying to them. They think you're cheating. They think you're doing something behind their back. If they never give this up, then you need to reevaluate your relationship, stat.