If you are that insecure about your boyfriend (browsing HIS web history) and obsessing over his porn/nudity interests, then maybe YOU are not ready for the whole relationship thing. Relationships, lasting ones anyway, are built on trust. If you want to know something, look him in the eyes and ask him.
Don't ask questions that you don't want the answers to. If you can't handle an answer, that's you're problem, not his. You are so scared of the unknown/gay possibilities that it is ruining your relationship.
You're seeing bogeymen (quite literally) in every shadow and recess that you can come up with. Know what is really bad, someone snooping through your stuff, without having the decency to ask you up front, all because they are paranoid. You're worried about him being gay, you're worried about other girls sending him photos, you are basically insecure in your relationship with HIM!
Either dump him now because you will never show him any trust (why should you start?) or come clean and get the fears and concerns out in the open where the two of you can look at them in the daylight and see them for the fantasy fears that they are. But it's a two way street, you want to look in his closets, then he gets to look in yours.
Porn is porn. Whether gay or straight. If it's a pop-up (which it most likely is) it could get gay or straight.
I'm gay and I get pop-ups from straight sites all the time. Then again I like both gay and straight porn. Don't make something try to be there that's not.
Take it easy. If you really think that he might be gay then just flat out and ask him. Stop the snooping.
If he knows about you snopping around or finds out, what you think might be something might be totally different and you might find yourself single very soon for something soo stupid. Be good to him, he'll be good to you and be happy!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.