Is there a difference between being Bisexual, or Bi curious?

From my earliest memory I've been turned on by male and female bodies. In school I had girlfriends, but was also secretly turned on by some of my guy friends. I would find ways to see or touch my friend's dicks, or they touch mine. We'd get high and talk about girls, or watch porn, and either compare our sizes or relieve ourselves together. I even had a couple of 3sums where my girlfriend got off watching me play with my friend.

I never really considered myself Bi at that time, because I would only have a romantic relationship with a girl, and only fooled around with guys for fun. Even now, I'm happily married to a very hot girl, but still get off thinking about playing with another big dick with, or in front of my wife. We talk about 3sums all the time, but as much as it turns both of us on, I don't think she'll ever agree to it.

I would never kiss or fuck another guy, but I do want to play with his dick. In my mind there is a difference. So now I'm not sure whether I'd be considered Bi Sexual, or Bi curious. Is there a distinction, or am I just trying to rationalize it?