Confused. Lost. Scared. Coming out.

Hello everyone. I'm a 27 year old male who l've been in a 10 year relationship (off and on) with a woman. I have children with her. Lately, as in the past couple of years, I haven't felt nearly attracted to her as I once did. In the last year or so, especially in the last few months, I've been finding myself more and more attracted to men (I've even enjoyed gay porn more as of recent). I've been finding myself enjoying the company of men way more than women, which was an abnormality at one time in my life. I grew up in a household where my stepfather and mother had quite a hatred for the gay community. I'm afraid to let the world know who I truly am which I believe is either bisexual or that edgy new trending word if pansexual. I really want to just come out and tell everyone. I even want to try being intimate and maybe in a relationship with a man. Where do I go from here? What do I do? What should I do? Please all the help and advice would be very beneficial to hopefully making me happy one day.