Advice?

I'm 99.9% positive I'm either bisexual or pansexual, but after growing up super religious, I didn't let myself think like that or let myself really have any of my own thoughts and feelings. The thing is, I'm married to a man and I really want to experiment. He's okay with me fooling around with a girl to "get it out of my system " but I'm worried it'll  just open up Pandora's box on my marriage. What should I do?