Hi Mike. Here's a little advice from a woman's perspective that might help. Things are different today than when I was your age some 20..er..11...um 5 years ago (yeah, that's it 5 years).
Touching wasn't so much the omg, he molested me era that it is today. But, on the up side, I think girls are a lot more open today to things like tickling, especially among friends. The best advice I can give you is to not push it, but to recognize opportunities and seize them when they come about. The worst/best ticklings I got when I was in high school and college were spontaneous outbursts during tag football games with guys and girls, truth or dare games, and just while hanging out and then saying something smart allecky (sp?) that got the daylights tickled out of me.
As long as you're not running around campus naked, smeared in peanut butter, tickling every girl you see, I doubt people will think you're weird. Just be a nice, respectful, playful guy. Even if you don't find exactly what you're looking for right away, at least you'll have some fun until you do. 😉