I think my boyfriend is a femboy

I'm [15F] and my boyfriend is [16M] and we've been together for around a 6 months.So recently my boyfriend got banned from tiktok and so he needed to use some alternatives for tiktok so he used YouTube and all the other sorts along with Pinterest. So trying to be cute he sent me little Pinterest photos saying lovey-dovey stuff. When you send somebody something on Pinterest you can see their profile and so I decided to check it since I can't see his reposts anymore and boy I saw a lot of femboy/puppy boy/ praise kink stuff and I don't know what to think of it because I don't know if it's a joke or smth. But I kinda fuck with it but I'm really shy sooo I don't know what to do, please help!!!!