Does this count as SA?

So basically on Thursday I was in my city's bus station waiting for a friend then he approached me and kissed me without consent, told him to stop then he did it again, to avoid awkwardness i pretended to be happy but I felt disgusted for letting it happen. He's never acted like this before and i dont wanna persue legal action at all. I live in the United Kingdom and I'm unsure if it is or not.

(I'm sorry but idk what flare this should be under, i just need advice)

Just a small edit: I have already cut them out my life about 2 hours after it happened, my friend group and most of his friends have left him. I feel guilty for having that happen to him but I know it's the right choice. Thank you all for your advice