I think the OP wouldn't have asked the question unless it was something that made him uncomfortable in the first place. Not making a judgement either way, mind you, just an observation.
And you don't need to find a GIRLFRIEND for this, just find a fun friend who enjoys it--we're everywhere...
XOXO
A girlfriend is a much safer option, if it's for sexual tickling I'd say it's required. Tickling a friend is fine but girlfriends have more added bonuses.