What do I do

I’m really into bdsm but my partner (josh) is not before I was sleeping with josh I was having all my kinks fulfilled by a family friend (Sam). Now I know that josh 1. Cannot fulfill my kinks due to trauma in his life that my kinks would bring up for him 2. Is not and would not be ok with having an open relationship where I sleep with Sam every once in awhile. I’m wondering what I should do because besides this he is an absolutely perfect boyfriend and he moved states to be with me. Also the sex isn’t bad just most of the time it isn’t enough for me