Okay let me be that asshole that asks too many questions before answering.
Is the alien consenting?
Are our genitals even compatible?
Is there any chance either of us could contract a disease from the other?
Are we capable of verbally communicating with each other?
Does the alien have to be physically attractive or could I have sex with it for other reasons?
I do believe you are correct. At least that was implied.
Choices choices....
Nope.
In a heartbeat
Okay let me be that asshole that asks too many questions before answering.
Is the alien consenting?
Are our genitals even compatible?
Is there any chance either of us could contract a disease from the other?
Are we capable of verbally communicating with each other?
Does the alien have to be physically attractive or could I have sex with it for other reasons?
If I was that worried about it, I'd just say no. Ha!
I'm not at all opposed to the idea, but there are a few moral and logistical clarifications that ought to be addressed first.
I know it's just a video game... But I think BioWare is onto something...

Yes, but ill deny paternity
That and from (s)he personality I am attracted to. Though, I think a lovely tomboy is for me in my love life.
Sure why not
Only if he looked like Johnny Depp.
Ha Ha!
Those green-skinned women on "Star Trek" are supposed to be irresistible to human males...