friendships with the opposite sex

I'm starting to think it might be impossible for me to have a good plutonic friendship with anyone. I have remained on good terms with my ex boyfriends to the point where I'm in one of their upcoming weddings, and all but two of them have apologized to me for how they treated me during the short time we were together. But for the most part, I seem to be incapable of maintaining a good friendship with those of the opposite sex. I'm referring to the types of friendships where we'd call each other on a regular basis for updates, and be able to turn to each other if either of us has had a bad day, etc. This is an exception with TJ of course, as he is my best friend of the male persuasion, but I don't consider that to be plutonic, I'm marrying that one. I can never seem to get my guy friends to open up to me and be able to come to me with good/bad times. My one, "closest" guy friend here at school doesn't even stop by to hang out ever, I usually have to initiate everything. Am I just too much of a "girl" to be close to guys? Is the fact that I'm even blogging about this my downfall? Even as a tomboy when I was growing up I seemed to repel boys from being my friend. Teasing was our only form of communication, and that still seems to be a factor for a few of my current ones. I love my girl-friends, but it's nice to have some guy friends to put a male-spin on the world too.