Name changed for this as don't want this thread to show on my posting history.
When me and partner first got together he was violent (never towards me though I thought I should add) and would punch people if he was annoyed/angry and he knew I didn't like it but he stopped punching people although they made him angry and annoyed.
Today he went out with his friend for a few drinks.
He came back earlier and had a small cut on his face and a cut on his lip. I asked him how it happened and he said he scratched himself.
For some reason I don't believe him.
He's now asleep (isn't used to drinking as he doesn't drink often and when he does it makes him tired).
Any advice on what I could do? Or should I just leave it?