I think it is totally reasonable to go on okcupid or tinder, and just prepare to have the conversation before getting physical with the other person. Not including your health profile on okcupid is not lying... there is all sorts of personal information we wait to share with someone, and it's a profile - not your life story. Herpes is probably not the most interesting thing about her and people can be a lot more, well, human and kind than sometimes we expect. Being straight forward about it when it is an appropriate time - not on a first date - will be key.