I'd have to say that touching is a strong hint, yes. Also the bit about trying to spend time with you, or calling you up/e-mailing for no real reason.
And if you can't tell he's in you, you should pay more attention.
Seriously, if you
wish he was "into" you, you could reverse this and send
him all the signs: touch, "accidentally" show a bit of cleavage around him or bump him with a breast. Or flash him. Or, oh my God,
tell him. Rough to do if you're shy, but it
can be done.
You're allowed to ask
him out these days if he's too thick to notice that you want him to spend time with you, for instance. Young guys are fairly good at not seeing what women think of as being fairly blatant. Subtlety is not their strength yet. That comes with more experience, if ever.