The only thing I can say right now, is overthinking is the bane of everyone's existence. There are a thousand angles from which to look at every situation and every angle leaves you with a different conclusion. Overthinking only leads to disappointment and stressful confusion. Take the very basic facts and feelings and make a decision based on those. Anything else is the result of our brains revolting.  

Letting anything else aside from ourselves control our thoughts and feelings is foolish. Letting others persuade our decisions and emotions is treachery. We must trust our instincts and our initial feelings and not let our brains run on a rampage. 

Expectation is said to be the root of all heartache, so is overthinking.