Why do most guys playfully touch certain ppl only?

I mean in a group setting, when everyone has been introduced to everyone and so there's no "best friends" in the group (everyone knows each other around the same amount of time i.e. a few weeks) and personality-wise everyone is quite fun and lively but some guys (especially those who are a little bit introvert) seem to only playfully touch (i.e. not in a pervy way) constantly the same few girls.. In my experience, these girls are not the best looking.. in most cases, the girls are average/below average looking (yes, I know beauty is in the eye of the beholder but this seems to be the case in almost every scenario)..and though they talk to everyone equally, they would behave very respectfully (almost as if to their boss with girls who are in many cases, prettier than the ones they are playfully touching all the time... behaviour-wise, everyone is open, friendly and lively...

What could be the reason for this? (I post this in the gemini section as I've noticed this with Geminis in particular but anyone can answer).

I know many of you will post that each person defines beautiful/likeability in a different way but I don't get why they would behave so respectfully/like apologising a lot, etc. with some girls but not with others?

Do some of us give off a more "don't touch" kind of vibe or do they feel insecure in front of more "attractive" girls?

Wow what a qeustion....any way im a libra guy but i thought i could give some input on the matter at hand.Any way maybe some of these guys are like me,and im the type of guy that will keep things calm meaning i wont ask a girl out even if i like her but i may just give a few hints that i do have a litle something if your lucky,but generally my whole life i have been the 1 asked 2 go on a date,and life has been good and easy this way....the is absolutly no need for change...maybe just maybe thats where their mind is at.Though only hot girls go for me or those that look good to be respectfull....the not sow good 1ns generally fear me.

Means they can share more with them, people chat with other people because they have same believes. Maybe prettier ones are more shallow and they want to talk too.

Introverted means internal, comes from inside. Extroverted means external, comes from outside.

Introverted dont go to that places to party only, they want to comunicate with someone with similar believe system, if not they mingle alone in the pond.

Thats the reason, along with others, that I rarely am in a group setting at discos or similar places.

I am an extreme introverted, for me inside is what matters, outside warns off, inside doesnt.

On average women that are not so attractive or more approachable because they don't have the look that make men just say I must talk to her they have to do more work than attractive female. Now there are attractive women that are approachable but some men stop because they think they need money to keep her.