What eskie said - trust your gut.

2 1/2 weeks is so not enough time for someone to share THAT MUCH about their personal life and sorrows.

It isn't gross that you gave him your social media sites - although in the future you might want to not give that out if you're having any red-flags. And why give up because of him? Not everyone is like that, and you learned a lesson through it.

1. you learned that you should trust your gut.
2. you should hopefully learn that getting as attached as you seem to be within such a short time isn't healthy.

If you start to feel emotionally attached/invested in someone when you've only just met him, you should stop and think and evaluate yourself. It's so easy to want to just have that "instant" attachment, but it's rarely healthy and just leads to self-deception (and, in your case, deception in general from the other person!). You were overlooking your own instincts because you wanted that attachment.

Not sure if that makes sense. But don't just quit because of one rotten person. Just keep the pace slower in the future!