Don't do yourself the disservice of stalking his social media and thereby keeping him in your life in this totally demoted state. You'll stagnate yourself from moving on from him if you start to become addicted to checking him out and what he is or isn't (hasn't) done "YET."
If you don't have the mental strength to delete him first then now would be a good time for you to de-activate yourself for a while and put yourself on private so that he can't stalk you either.
BTW: "Maybe down the line" or, "lets see what happens in the future" or "lets just be friends" are all soft let downs that more times then not mean nothing but lip service given to the person being dumped to ease the news. Don't rely on those words for anything.
Process the break up as if he's died and you'll not be seeing him anymore and you'll grieve and heal far quicker with acceptance. Don't be afraid that if you go radio silent he'll not be able to get back with you. He broke up with you and any contact that doesn't start out with "I've made a mistake, will you be my girlfriend again" is just fluff so get on with your life accepting that he's no longer going to be in it.
Hugs and feel better soon.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion