Laptop Securitiy

We are awful with computers. Hubster and I got our first desk top 13+ years ago and when it started acting funny or running slow (it was dial up, and slow for that), we decided it was just an older version and we bought a new one. It seems as though every mutually shared computer would contract some virus and have awful pop-ups that would never be removed from our protection programs. Hubster would load every anti spyware and spam programs he could get his hands on. Whatever the techies at work told him to try he would. It made things worse. He claims I must of clicked on something I shouldn't have and of course I thought it was him.
He finally got a laptop for work and another for his DJ business. I requested he leave the desk top for the kids and I...he didn't think that was convenient.

I finally got fed up with all the issues and requested a laptop all my own. I didn't want anyone else in the house to touch it. I know this sounds selfish, but after years of knowing that the pop-ups were not from sites I visited I had to be able to prove myself, even if I was the only one who knew. Two Chrismases ago Hubster got me my laptop. The first thing he said Christmas morning was "Can I shoe my parents the screen?" "no." They looked at me like I was crazy. I couldn't take the chance. To this day, if I'm on my laptop and he wants to look something up he'll say "Since your computer is up, can I..." "No, I can look it up for you, but you can't touch it." Seriously, he does have two laptops of his own. I can't help if one doesn't work properly and the other just had to be replaced because something happened to the screen. I don't mean to be selfish, I just know that in two years I have never received a virus that my security scans couldn't remove, and I have seen no naked ladies pop on my screen either. What would you do?