"Fuck Gary, anyway. He is dead and she is here with an alien pressed against her cervix."

Kij Johnson, "Spar" Clarkesworld Oct - this is an amazing, disturbing (dare I say penetrating?) story about alien sex that actually deals with the various potentials of what sex with an alien might actually be like - that is to say, confusing and uncommunicative as well as being (by necessity) fairly open-minded about the definitions and parameters of sexuality. A chilling, ruthless and very memorable story. I agree with Jonathan that it's one of the must-reads of the year.