Loose Wife

Either that, or he's actually trying to be a homewrecker.

Well, if it's any comfort there's a possibility that she's being set up going by that last panel, and I don't think he's a cuckold considering that he likely knows that she is indeed a slut cheating behind his back. It also makes me wonder if those kids are the husband's. If they aren't his, it would be glorious if the husband did find out, got a divorce, and then said to her, "Don't expect to see me again, those aren't my children anyway."