What do you think?

So boyfriend and I have been together for over a year and around 7 months into the relationship he asked me if he could buy me a promise ring? And at the time i felt like things were moving too quick so I said not rn... well now I feel better about the relationship and like I could definitely marry him... so I casually brought it up and he says like I can’t right now... and I understand! BUT he’s out buying truck accessories.... now idk of wether or not this is something I should be upset about but it does bother me a bit.