College grad finally realized I'm not straight...but gay or bi?

About Me: I'm a 22 year old male who just graduated at the top of his class from a prominent state university and will be moving across the country to a large US city in a few weeks. Within the last year, I've started to acknowledge the fact I might be gay. I've come out to a few gay friends (including one who I hooked up with recently). However, I'm starting to wonder if I'm actually bi. I'm scared to come out to my straight friends and family, but even more scared that I might tell them the wrong orientation (i.e. tell them I'm gay when a year later I realize I'm bi).

Background:I grew up in a tiny rural community where there were only a handful of out gay people, all of whom personified every stereotype known to man. I was always attracted to other guys (peeking at them while they changed in the locker room, getting excited about the prospect of group showers, watching gay porn from pretty much the beginning) but never even considered the possibility that I was gay. I figured it was just a phase and more about an appreciation of other men's physicality than a sexual attraction. I dated a few girls but definitely had feelings for some of my male friends.

College:In college, my world opened up a lot and several close friends came out to me and I made new gay friends. At that point, I started to realize being gay didn't have to be one's entire identity and I found a new level of comfort with gay people. Starting freshman year, I had a regular friend with benefits (female) who I wasn't really that into, but the benefits were good. At the same time, I developed a huge crush on one of my very close (straight male) friends. We've been inseparable ever since and are definitely best friends. We do everything together, talk for hours on end, and share most beliefs. I've dreamed and day-dreamed countless times about something physical happening between us or me coming out to him. At parties, I dance with girls, occasionally make out with girls, and every once in a while bring a girl to bed. But I always find myself wishing I was with the hot guy I saw at the party or even better, with my aforementioned friend.

Recent Developments: Roughly a year ago, I was on a walk by myself when it finally struck me that I was probably gay. Besides my friend, there was another guy (openly gay) I was pretty interested in. We texted occasionally during the fall and one night this fall after bar close, I accepted his invitation to his house. We made out and I slept over. We repeated that once more in spring. A few weeks later, I came out to another gay friend of mine when asked straight up if I was gay. That same week, I went home with a female friend (while we were both drunk) and got a BJ. Very recently, the friend I had made out with invited me over. I went to his place, we made out, things escalated, we got naked, and we ended up having sex...and I enjoyed it.

Summary: Obviously, I'm not straight. I've pretty much come to terms with that. I've told a few of my gay friends that I'm gay and have done enough "experimenting" to say with confidence that I enjoy being with men. I almost exclusively look at gay porn and think about men when I masturbate. But, there's a nagging part of me that says I might be bi...I've had experiences with women and been satisfied. But, I think I picture myself with a guy in my future. Specifically, my best friend (of course, my fantasy is that he's also closeted). That said, I don't really want to be gay, I don't want to come out to my friends and family (even the accepting ones), I don't want to have to go through the explaining and the disappointments and the fights. On top of that, I'm leaving my home state behind and moving to a new city in a few weeks.

Questions: How do I figure out my sexuality? Should I come out to my best friend? How should I approach coming out, given that I'm still not sure if I'm gay or bi, and that I'm moving across the country in a few weeks? How should I approach coming out to people in my new city?