I'm Arab-American, but I was mostly raised in Jordan until I graduated high school, which prompted my family to move back to the U.S. for a variety of reasons. Growing up in Jordan, the adults in my life were very comparable to how most people in this thread describe the conventional Arab perspective on sex. But a lot of people my age (in the area I grew up in) were quite open about it and experimented with sexual activity in one way or another. I actually have a handful of LGBT and bicurious friends back there.
Until I was about 13, I was pretty much clueless about how sex worked; all I knew was that it's something that has to wait until marriage and nothing else. Things started to change as the internet gradually became a bigger part of my life and I started learning more about different relationship dynamics and how sex plays into them. I would say that this is when I became more liberal in general.
Virginity is a social construct that was intended as a method of controlling women in western and non-western culture, especially in a time when they were treated like property whose value lies in her hymen (sadly, this fucked up perception still exists in the 21st century). For some people, sex is just fun; as if it wouldn't be! Personally, I'm not one to be having one night stands because to me, the risks outweigh a momentary need for instant gratification. Marriage definitely isn't a requirement for me, though, and I don't plan on waiting either.
As for homosexuality, let's be real, everyone's a little gay. There's not much to say about this, I'm a full supporter of LGBT rights.
My SO's past relationships are, as the word suggests, in the past. If I've decided to be in a relationship with someone, then I'm at a point where I trust them to be faithful to me and that nobody from the past is still a part of their life as far as romantic feelings go. While I do have jealous tendencies, I would say that it's less about mistrust and more about my own insecurities.
My family's opinion is extremely important to me, and their presence in my life is crucial. While they might not agree with some of my decisions, they are still the only people who have constantly been there throughout my life. One of my biggest struggles is trying to find the autonomy to make my own decisions without panicking about how they will react or if their perception of me will change. While I want to make them proud, I'm working on making my own happiness a bigger priority.