I was never into hugging dudes or anything...it's the way I was raised...
but about 8 yrs ago I joined a church where that was the custom...
everyone hugs each other...it was weird at first being hugged by the men, but I got used to it. I think it was the older guys who helped make it ok because it was like getting a hug from an uncle.

before that any physical show of affection was just not a part of my life...
except this one time I was leaving a job for good (it was my last day) and one of my coworkers grabbed me in a huge bear hug & told me he'd miss me. my first reaction was pure shock and I was like "OK", but when he did it again & the hug lasted a little too long for my comfort I had to tell him not to hug me anymore.

but these days I'm a lot better with it. I hug my friends & male relatives w/ no problem. now kissing is a whole different thing. I can kiss the male babies in my family, but once you're over like 2 or 3, that's it.