Situation-ship help!!!

So I have been dealing with "my" guy for a year come January. I say "my" because we are only dealing with each other although we aren't in a relationship. Due to the circumstances of his mother having an extremely aggressive cancer and our lives seeming to not mesh well together due to personal obligations. But Our bond is seriously incredible and it's one of those situations where the chemistry is everything, we are great friends outside of lovers and talk morning noon and night without fail. I see him all the time and it's great.

But because we aren't in a relationship I don't feel obligated to celebrate couple holidays like sweetest day, although he got me a teddy bear for Valentine's Day. I genuinely appreciate him as a friend/confidant and I'm thinking about giving him a gift near thanksgiving day, but I'm unsure if it would go over well.

Please give me advice, because everyone I know if bias to some extent. (Also, I RARELY give gifts without feeling obligated and I just genuinely want to do something nice).