He told me I can leave a toothbrush at his place, what does this mean for our relationship?

Anonymous
So a few things happened over the weekend with my boyfriend and I. We went to the store and I reminded him to get a toothbrush. He picked up a 2 pack and said you can have one. I told him its ok I have one I bring with me. We get to his place and he throws all his old toothbrush’s away and said I can leave mine in his toothbrush holder. The next day we went out and when we got back we were chilling in the kitchen and he went to his room and comes back with a hat. He told me I can keep it. I've been staying at his place almost everyday for the past 3weeks.
He told me I can leave a toothbrush at his place, what does this mean for our relationship?
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