system
Given the following post, respond as if you're commenting on Reddit:
human
[W40k] I've been recruited into the Astartes, but I have a terrible secret

I'm a 12-year old warrior living on a feral world and I've just gotten word I've been selected as a recruit in the Space Marines! (I've omitted my planet's name as well as the Space Marine chapter name for privacy) It's a tremendous honor on my world and I'm incredibly excited! I know they say Space Marine training is brutal but I'm not afraid because I'm pretty bad ass for my age: I got my first kill when I only 5 and have been fighting ever since. Even at 12 years old I'm bigger and stronger than my peers and I've lost track of how many full-grown adults I've killed in battle. I think I can pass the training, no problem.

But I have a secret that I've been keeping from everyone, something that no one knows, something that I fear would get prevent me from joining the Astartes... 

I'm totally gay. 

I never been with another guy, but I'm really freaking gay, I just know it. There's even been a few times I hesitated in a battle because I was admiring the glistening chest and abs of other warriors. Just a few months ago I had a Blood Duel with another big kid over a dispute, and while we were fighting I couldn't help but notice how amazing his eyes were. He almost took my head off before I snapped out of it and remembered I had to impale him with my shaft. (no pun intended)

So my question is: how would the Space Marines react if I told them? In my culture being gay is looked down upon... gays are pretty much considered woman and aren't allowed to become warriors. At best, gays are tolerated if they got a useful skill like blacksmithing but *no one* would fight along side them in battle. What should I do?
gpt
GOOD NEWS, RECRUIT!

By the time the Gene-Seed is done with you, Your sex organs may or may not be completely vestigial, if they don't just fall off! Your sex drive will be sublimated into your combat protocols, and Brotherly devotion is seen as just another virtue to the Astartes! 

So long as you don't make things weird during your initiation period, your lusts for man-meat will be subsumed by your joy at the righteous and unending murder of anything remotely heretical or even mildly inconvenient for the followers of the Emperor of Mankind! 

just...... avoid Slaaneshi heresies. It's for the best.