Dating while with an eating disorder or recovering from one is tough. The ED is so isolating that you kind of forget about other people all together. The ED is more your companion than anything. To add someone else in the mix, stirs up a variety of issues that may or may not have been present.
There is a constant myriad of messages to overcome, including the most powerful one--yours (or ED if you believe it is more of a separate voice). All the ingrained thoughts of feeling unlovable, damaged/flawed, broken, unworthy, not good enough, and more are difficult to overcome. Dating won't necessarily solve them, but it might help lessen the harshness, offering a glimmer of hope.
Just like your ED, dating takes time. It likely won't happen overnight, but I do think it can happen for many of us, even to those who feel they may never find anyone. Keep trying. (I've definitely had to tell this to myself several times) Like denim jeans, sometimes, we have to try many before finding the right fit.