Good way to cover or explain scratch marks?

Er, OK, firstly if a troll is someone who's fabricating a story just for the sake of posting, that's not me.

No, the MM didn't ask me for help but when he told me about the sratch marks I wanted to suggest ways to help him out as I feel responsible. I was stupid and he's in an uncomfortable spot because of me.

There is only one bathroom in the house and he is afraid she'll see him coming out of the shower or walking down the hall to his room. He normally evidently would only be wearing a towel around his waist. The split has been amicable mostly and he wants to keep it that way; she might not care at all, you're right, but he would rather be safe than sorry.

No I'm not preggers nor would I be. Can't happen. And this isn't any more sordid than I've already let on, and while it may not seem like any big deal, I just thought that I would try to help ensure that it didn't become one as he was concerned about it.

Aloe has been obtained already; thanks for that. Thanks as well for the pit bull suggestion...not useful but quite humorous.

If anyone else happens to have any suggestions, I'm much obliged in advanced.