Haha,just out of high school.Thats certainly a fun age to live through.You sound like a pretty nice and outgoing person.Your introduction is really good so think youll qualify for the gift certificate easily and can start with a couple of to-gos for testing.Since your already pretty good at talking to people and want to get shy and introverted people to talk to you more.You could probably give instant honesty a try to increase their trust and to open up to you more.Instant openness may also help to get them to loosen up and start talking more.
Haha,i thought pheromones were about sex appeal too but found out there is a lot of social pheromones as well since i started here.Based on your situation,should probably check out the socials instant shine,instant openness,and instant honesty.Those 3 would probably work the best for you either alone or in combination depending on what your using them for.For the boyfriend and the brother,instant honesty is probably best since will make conversations deeper.Hmm,wont be unnatural unless you overdose,then you and they may blurt out things they dont intend to(:-p)
You should probably check out a couple of the threads below before making your first purchase and im sure the experts will give you some good advice as well.