Paying is the gentlemanly thing to do and you want to show her that you are a gentleman. Hugging still sounds okay just don't do it in a way that would cause her boyfriend to punch you in the face. What to wear. Nothing dirty, wrinkly, stained stretched, dingy or holey. Let your fragrance be subtle go with aftershave and axe deodorant not a bunch of cologne you don't need to smell like a perfume factory, maybe wash with suave men's three in one body wash shampoo and conditioner citrus rush or Axe but it is way more expensive with the same amount of effectiveness. Be you. At the mall sit in the massage chairs, people watch, have a drink straw cover flicking match to see whose goes the farthest. Guess what color the next guy coming around the corner is going to be wearing. Try to figure out how long the couple walking by has been together and tell her the stories that you make up in your head about the people you see. He is a cop, she is a waitress and they met when he pulled her over for a red light and went out for ice cream after she fought her speeding ticket in court. Their son is named Jonah and he doesn't like to be in the mall. Just the good stuff. Create a scavenger hunt something like bingo create cards and rig it for her to win. Talk about her future plans. People love other people who pay attention to them and if her boyfriend is full of himself she could use someone who cares about her for a change. Be the guy that she can run to when things go wrong. Just know that you might set yourself up for heartbreak or to be the happiest that you have ever been in your life. My husband was the third wheel for many months and when things fell apart he was there for me and this is why I am his wife. I was even engaged to the other guy but he never gave up hope. Love her enough that you want what is best for her even if it is someone else.