So......

Well, I'm no longer a kid and no longer confused. I know who I am, even if it took me this long to find myself. I am Bi. I grew up in a very small rural town in Iowa. My graduate class was less than 100 students. Where I grew up being gay was just un heard of. So bi, forget about it. So there was just no one I had ever felt comfortable talking to about my attraction to both genders. I am not yet 30 and have been in to long relationships with women I love. The first ended after 6 years and I caught her cheating(high school sweet hearts), the second after 5 years of marriage.
Since then I have been out on dates with members of both genders. I haven't met the right person yet but I do understand myself so much better now and realize its not a part of me that I need to just set aside. But during this time I was living in another state where I really didn't know anyone. I felt comfortable not having to talk to people I know about it. But just recently I moved back home to Iowa and am renting a place literally 1 house away from family.
I have been wanting to tell someone and thought about telling my brother and his wife. My brother and I are really close and I'm afraid he will treat me differently(not necessarily bad but different), and I don't want that. I used to think he wouldn't accept it at all but I also recently found out that my brother's wife's sister (my sister in-law by extension), is bisexual and open about it. My brother doesn't treat her weird from what I can tell and she lived with them for a year. Although he does still seem uneducated. I also thought about talking this over with my in-law and see how she thinks he would take it and going from there. I'm just still not sure. I'm comfortable with who I am but I just hate to stand out for any reason and I always have. I don't even like positive recognition it is just who I am.
I was just looking for thoughts on this.