You have to be comfortable and confidant with yourself, and know that your seizures are just something you have, not something you are first- no relationship will last while you're still working through all of that (and that is so normal- so that is good that you're asking the questions- but put the whole gotta-get-a-guy thing on the back burner until you can deal with your own seizure disorder).
Someone who knows about your seizures, and doesn't treat you like you do is a big clue. If someone baby's you, or wants to rescue you, or treat you like you're sick all the time- run for the hills !!!
They are taking care of their own needs, not being a part of a two way relationship. If someone wants to talk about your seizures all the time- or lets you talk about them all the time to the exclusion of anything else being a part of your time together is a bigtime red flag for LOSER !!! They need to be supportive and caring, kind and encouraging, and most of all see you for more than some diagnosis. That is such a small part of what makes you who you are, and if they can't see that, dump them like garbage down the disposal