I've never been hung up about porn, ever...so it would never bother me to find my bf looking at porn or whatnot because in the end well...they're just pictures...he cant touch those girls, they're not physically real...just pictures on a screen.
I think maybe a way to handle this is if you checked out porn yourself. I mean, I guess girls dont TYPICALLY look at porn...I do...and it's no big deal, I don't look at it to jill off or anything, it's just, as guys would find it...very pretty...plus it's a good way to find nice hairstyle...seriously.
And after a while, you'll realise most girls who are in pictures...can you imagine what they do in reality? Probably failing students, or have dead end jobs or really really uneducated...and if anything that makes me better about myself
j/k...but still if you browse through it...it'll make you more confident about yourself towards your bf cuz you'll either start enjoying it yourself and you guys can share a common interest...or you'll hate it but know exactly what's bothering you about this whole thing.
On the other hand...if you are so upset about it you're husband should make some effort to explain, or feel sorry...or stop for a while...till things get sorted out...this may be one of those things where you have to talk to him very rationally while you're not upset...like a very civil conversation...he'll be more likely to comply with you that way...instead of sneaking around the problem.