I don’t understand ...

So heres the thing.

I was with someone for two years. They told me how much they loved me, how they saw a future with me, and the out of no where dropped me like a hat....

And now I’m putting myself out in the dating scene again, and I’m just not feeling any chemistry with anyone...and it’s scaring me. It’s been two months since the break up, and I woke up this morning feeling like absolute shit...what did I do wrong? I’m educated, have a good job, I’m not atrocious, I gave this guy my entire heart, soul and all my love and compassion and he tossed it like it was nothing....are some of us just lucky to find someone? Is there really someone out there for everyone?