(Preface: I have read through a few of the Gay themed questions on this site and didn't find any that addressed this question. This question is somewhat similar in nature but doesn't have an answer.)
The cardinal sin of homosexuality in the Torah is the act of anal sex. But what about other forms of sexual acts with another man? How are they classed? Is it the same as same-sex prohibitions?
In this article the writer asks: "What options are available for two Jewish gay men to have a physical relationship?" And goes over some conjectures.
Additionally, I'd like to know what about a Jew who has homosexual relations with a non-Jew? (This would eliminate the sin of causing another Jew to sin.)