My mom and dad were always super jealous. Like unhealthy jealousy. For instance, my mom smashed my dad’s computer one time over a picture from the internet. Neither are allowed to have friends of the opposite sex. Like not even as Facebook friends, even if they don’t talk. Now, I’ve always been extremely jealous in my relationships. I’ve gotten a lot better at internalizing it over the years but my stomach still gets in knots when my bf even mentions another woman. I almost wonder if I’m that way because it’s what I grew up believing was normal. Idk if I’ll ever unlearn it, but yeah. I guess you really are a product of your environment.