OP, you need to stop being a spectator in your own life. You can be passive and hope that you wear him down with guilt because he feels bad that you have nowhere to go or you can be decisive and take charge of your own narrative.
If he wants space, give him space. Take him at his word and move out of his house. Whatever that looks like. As a lodger somewhere, a short time on someones couch, a sharehouse. Go for your job interview and smash it and move forward and do what you have to do to move onwards and upwards.
Stop thinking about where you SHOULD be for now because you're not there, but whose calendar says that's where you are supposed to be? Thinking like that will probably mean you'll 'settle' in case you 'miss out'.
Sounds like he's either afraid of the drama/repercussions of ending it whilst you are living in the house or he has someone in the wings and wants to give that a go. You insist that there can be noone else, and that may well be true, but he may have someone he is wanting to approach. If it doesn't work out or isn't what he thinks it is, he'll be ready to end the break and recommit. Either way, do you want to be what he is 'settling' for? If he is introverted and socially a little awkward, he might just decide it's best to stay together.
This is where YOU need to be the stronger person, not the passive one. Let him have his 'space'. I'd have no problem asking for some $$ to help you find something temporary. Be strong, independant and don't rely on someone else until you ARE these things.
Btw, I'm aware of and cringing at my use of clichés but, as trite as they sound, you really do need to be the author of your own story 🤷♀️