Why do some people gag when someone is vomiting?

Why is it that when a person vomits, it causes others to vomit — even when they don't have an illness causing it? Is this something triggered by the brain or is it something that happens by reflex (survival instinct) for someone to vomit since, perhaps, what the first person was eating may affect the second who vomits as well?


Can our relationship survive summer break if we haven't had sex yet?

I am a 19-year-old college student and am seriously involved with my boyfriend who is a 20-year-old college student. We have even talked of getting married someday. Our relationship is very close and we talk about everything, and he is very wonderful and supportive. I feel very committed to him and would really like to have sex with him. We have tried twice, but it hasn't really worked out because my vagina is too tight. I am pretty sure the problem is just that it needs to be stretched more, because I have been to the gynecologist and don't have any infections. He says that he is okay with whatever we do and that he loves me no matter what, but I still feel guilty about not being able to go all the way. How do I get over this guilt? I will be leaving college for the summer soon and we will be separated for awhile and I want to make sure that our relationship is as solid as possible before I leave so we have the absolute best chances of surviving the summer!


How do I define my sexuality and tell my parents about my transgender partner?

I am a girl, in love with a transgender guy. He was born with the wrong parts, but is truly the kindest person I have ever met. I love him very much, but I am afraid to tell my parents. "Adam" may have been born a female, but he is now a male, and is planing on getting surgery to prove it. My parents are Christians, and I'm not sure they will approve of him. Does me liking Adam, and female to male transgender people, make me a lesbian? Or bi-sexual? My parents deeply disagree with these things and I am afraid to talk to them about Adam.