I agree with Farmergirl, "You have to communicate." If you guys have a calm chat, at least it won't get blown out of proportion if there's reasonable explanation.

I know my partner thinks there's hot girls on his Facebook friends list. We're open about it. He tells me and then we both gossip about how cute they are. :P But we're both massive social networkers (we both friend a lot of randoms and talk to a lot of people) and understand that the 1000 friends on there (accepting random adding is bad :P) aren't there to steal he away from me or vice versa etc. Though, I do get edgy with some of the old females he was friends with overseas being on his profiles but I think a bit of jealousy I guess is normal.

If you're not a big social networker, or don't use them as publicity as my partner and I do I can totally understand how you'd be feeling negative but I'm sure if you talk to your husband openly, I'm sure the explanation will be reasonable or something that has a reasonable solution that makes you both comfortable.