My best friend introduced me to his new girlfriend and I thought she was nice. But after a while she started doing things like playing with my hair, laying her head in my lap, hugging on me, and making sexual comments towards me ( in front of him no less!). My friend is oblivious, it was weird at first but now I kinda look forward to it, is that wrong?

Damn hoe, isn't one dick already enough?
Don't know what I should advise you, certainly don't talk to your friend about that, just keep your distance, man.
Just pretend you don't notice if you cannot bring yourself to stop it.
Your best friend, he is supposed to trust you like family, you should give him reasons to trust you like not letting his girlfriend flirt with you.
I was in a situation not as bad as this, but still pretty bad in my opinion. My best friend's girlfriend admitted that she liked me before she liked him, and that she was hoping to get with me than him before they started going out (I was the one that got them together, my friend wanted a girlfriend). So I was a bit weirded out and said something along the lines of "Well, I don't believe this will happen, he is my best friend and I don't take loyalty so lightly".
She would flirt with me countless times before I stated that, and it lead to him being quite jealous, which made our friendship a bit worse, which is why I had to make it clear to both of them that I didn't want this happening.
Total betrayal of loyaly and trust.
There is a lot more to life than "Pussy". She is could cheat on your best friend with you, and a quick "fuck" could mean an ending to your friendship. Is it worth it?
Spot on.
But I didn't know she had those kinds of thoughts about me. The worst thing is that the things she was describing were a massive turn-on to me and I was temporarily flustered. The way I dealt with it was to say that I was flattered but that he's my best friend and I couldn't do that to him. I never told him what happened. In retrospect, I still think I did exactly the right thing.
Now he's married to someone else, I do still occasionally wonder about her too.
1. They are a true giant slut, they have massive insecurity issues about themselves for whatever reason (Dad didnt show enough attention, both parents are alcoholics, etc...)So they compensate by seeking attention in any way they can get it most of the time the easiest way is to be a giant flirty slut.
2. They just like to play games and seek attention. They get a thrill and kick out of being as flirtatious as possible only to lead it right to the point of no return at which time they then act all confused if you make a move, and they tell their boyfriends just to see the reaction he gives, i.e. "Thats it, I am gonna kick your ass now man, etc". Dont ever let yourself be fooled by women like this, they know EXACTLY what they are doing and even if you play along with it you are giving them the attention they desperately seek.
The best way to handle either one of them is to call them out on their behavior, something like "Wow you are really aggressively flirtatious for someone who is in a relationship!" Make sure to do in front of a bunch of people, preferably a group of friends, with the boyfriend present.
Flirt with BF's bestie and see how he reacts.
>Doesn't get mad, he's too easy and weak.
>Confronts her, on to next test.
I would enjoy it to, just don't try anything.
Something sounds off.
Either he's really naive, really open, or really doesn't give a crap about her.
Maybe she's trying to test just how dense he is...