I would say, try to identify exactly what the problem is for you. What are you uneasy about? What makes you uncomfortable? Try and find what it is, as specifically as possible.
Then look at it, and try and see where it comes from. Maybe there is something else that needs to be addressed and would make you fine with it. Either way, it would be easier dealing with it if you know exactly what the problem is.
Me: 31F, straight
Seamus: My husband, 32M, straight
Dragon: My boyfriend, 29M, pansexual, married to Fox
Fox: My boyfriend, 29M, homoflexible, married to Dragon