Whenever the honeymoon phase of the relationship is over things are prone to get sour. That could take awhile since your relationship is in a state of tension, awaiting one another's company.
Just to get it out of the way, women don't care about their man's feeling. LOL. Excuse me. So when a guy comes across as needy it's very offputting for women. He seeks comfort in isolating you from other men, and is the type who would seek out to punish both you and the other guy if he's jealous enough.
Him giving you something he can't afford ( not happening for awhile I assume ) adds gasoline to the flames of his insecurity. He claims to give you everything in advance and maybe he'll pull it off and actually give you a car then return to being less made financially. After that ( if it actually happens ) you'll have to be very mindful of him catching your ass talking to other guys or else hell will break loose, and you'll learn something about him you never knew in a state of discord.
What page is this ? The highlight of your relationship update so far is a free car. HA HA HAAA ! If only that's all a man had to do in order to secure a woman's respect. You'll enjoy the car, but your instincts will yearn for a strong partner who worries less about his mental health and more about yours. Otherwise you'll begin to find him insufferable especially when you're depressed yet again.
With that I say set your boundaries early in your relationship. I'd reckon he doesn't trust you which is why he laid down what it'll be like if he catches you making him jealous.