Is it weird to by your ex Father’s Day gifts when your both in new relationships?

My husband and I were married for 5 years had two kids together and have been divorced for two years we’ve both since got remarried but neither of us have kids with our current spouses and don’t plan on it, he is completely involved in both our kids lives. My current husband is a step father but they don’t call him dad because he’s not their dad, he’s an excellent step father and I get him a Father’s Day card and usually the kids make him something as well as their dad, my ex provides for them and does so much for them and I appreciate his commitment to them so much. My current husband doesn’t care that I get him Father’s Day gifts, my ex’s wife doesn’t seem to mind and if she does she doesn’t tell me which I feel she would if she had a problem. But I was telling my coworkers and they were like aren’t you divorced? That’s weird, regardless I’m still going to buy him Father’s Day gifts but is it really that weird?