Havin' had my girlfriend volunteer to be tickled at SEVERAL gatherings, I can't recall ever having had a problem with it.
I've faith that anyone being with me, in any seriousness, with a stated commitment, is playin', actin' out their sexuality, flirtin', and/or experiencin' and learnin'. I guess I just ain't the jealous type.
She didn't tweak on my volunteering for a retribution tickling from the groups' contingent of 'lees, either. Didn't phase her, largely, as she stated, 'cause she understood that a)she'd get any benefit of my bein' aroused if such interested me, and b) such didn't interest me.
It's a matter of context, too, folks. The same girlfriend TWEAKED in a big way, at one event, when one of the 'lees I knew was quietly talkin' with me, one on one, and bein' tactile. Mind you, I'm about as tactile as one gets, short of pawin', so I don't sweat such from friends. Most of the time, I don't even notice it. She sure did, though, and was plenty cranky. Wasn't until I explained that there was nothign there that she calmed down.
Context, in such things, for me, is everything. I make a point of telling women about the events I host, and what goes on. I explain, specifically, that it's tittilating, but that it only awakens an interest that I'll bring back to her. Anything arousing goes back to my lover, ultimately.
So long as you know your lover KNOWS where your head's at, and where they are in such a deal, and you don't hurt them, you're doin' right. It's really that simple.
dvnc