When you first start dating again after a breakup, you're most likely going to go on tons of dud dates before you meet the right guy. You're probably going to have to deal with rejection, as some guys you end up liking will inevitably drop off the face of the earth or give you the old fashioned slow fade after you've been hooking up for a few weeks. Sigh.
But it gets better.
So put down the cookie dough, girl! Be friendly and kind to the guys you date, while keeping your feelings in check until they really begin to invest some of their own. Expect some things to go wrong, and allow yourself the emotional wiggle room to deal with whatever comes. I promise you, even if it seems like you're not meeting anyone worth your time, you will. And if a few you thought were promising end up just being disappointing, that's ok! Remember, you prepared for this.
Just keep meeting people, keep an open mind, and keep your thoughts positive and focused on what you're looking for. You will find it.