Need some help with my English

[ecchi]

No I don't mean that I need help spanking someone, I mean I am writing some porno stories and I need help with finding the correct word.

What is the past tense of "Cum" ? I have always used "Came" in the past but suddenly it does not look correct. And I think I remember reading a post (possibly not here because I could not find it using 'search') where someone said that "came" was wrong, but I cannot remember what they said should be used.

I know it is a silly question, but I hope to sell these stories (as apposed to publishing them on my site) so I want to get it right.