>Guidance given to counsel by the Crown Prosecution Service of England and Wales states: "The fact that the victim made a sexual advance on the defendant does not, of itself, automatically provide the defendant with a defence of self-defence for the actions that they then take." In the UK, it has been known for decades as the "Portsmouth defence"[42][43][44] or the "guardsman's defence".[45] The latter term was used in a 1980 episode of Rumpole of the Bailey.
(From https://en.wikipedia.org/wiki/Gay_panic_defense)
This is absolutely fucked up regardless of the gender of either party.
If someone takes a pass at me they are getting their shit kicked in. And I, at the very least, should be able to claim diminished responsibility.