Might have been a one off, I know it was quite stressful at the time and caught you off gaurd but carry on as normal even best mates sometimes have scraps, gets a few things off their chests dogs arnt much different really, dogs do scrap with bitches, dont go jumping into something you regret later, I have a first cross beddy/whip dog sounds just like yours, missus loves him to bits can get quite jelous though, hope it works out for you and you find a solution atb nasher