The key to this problem, and to another very similar question I received this week, is honesty. Be honest with yourself first and those around you. You are not doing anyone a favor by hiding your suffering - and the real you, the inside you, that feels like you're a fraud and ready to implode every waking minute needs a rest. Easier said than done, but often times when our mental struggles become overwhelming we need to reverse a bit and start on a new path. A path that might not be as sexy as weekend getaways to Vegas or partying with our friends, but is all together more fulfilling and critical. It's the path of counseling and doing the inner-work of digging in inside not of burying oneself in outside distractions.
Dating and developing relationships is really secondary to all that. Maybe that's not fun to hear, but it is the truth. It's like doubles tennis. How are you supposed to be a solid partner if you feel like hell and can barely get your racket over your head? Go back into "the gym" and get your serve right. Only then will you be aces.