Ladies please tell me it is not a big deal

So my bf and i have been together for 8months now. We are very serious and talking about marriage and getting an apartment soon.

I bought us both matching promise rings when we were about 4months into the relationship. We never took them off. When id forget mines my bf would have a fit when hed see me without it. And i never seen him without his.

Here recently i have not seen him with it on. I asked him about it and he says he just put it away and forgets about it. But that does not make since because he never would forget about it. Our relationship has gotten stronger and better. Idk why hed just stop wearing it. Please tell me im overreacting and its no big deal. My feelinz were hurt.. Msgs down below.