Things I do not mind:
1) Holding hands (it seems natural and friendly and non disruptive)
2) Hugging (It is a natural response and important in both social, romantic, and QPR relationships.)
Things that I dislike:
1) Making out, or kissing more than once. (Such as a parting kiss. It seems inappropriate to draw attention to yourself with making out in front of anyone)
2) Sexual or physical "Hints". (Slapping ass, or humping etc. Is extremely inappropriate. No one wants to see that)
3) Favours (I need no explanation here, please no)