Okay, so it's established that most Saiyuki RPers do not stick to a plot, go very OOC and are insane with Mpreg, right? Well, let me explain this particular fail in the style of Peter Griffin:
Well there once were two cowboys all alone out on the trail and they discovered they could sleep with another male now they're havin' buttsex, cowboy buttsex...sodomyyyy! Sodomyyy!...Sodomy...
Well, now that that's out of the way, get ready for about fifty more Barebutt Mountain references in this rant. As Saiyuki fans who have read Reload have probably guessed, this is a rant of the Gat/Hazel ilk. Now, let me just say, I love that pairing, it's my OTP for the series. Nothing makes me squee more than the fact that Gat ain't quittin' Hazel. But anyway....there are some things that really don't need to be brought up in a roleplay between them. For instance, we had decided this RP should have a plot, a nice plot involving jealousy, love triangle, etc. Infact, I believe we'd decided on an idea like the one in Doctor Horrible where the underdog saves the love interest and the love interest prefers the jerkass. So Sanzo happens to be in the vicinity when Hazel gets rescues, Gat is the one who kills the threat but Hazel assumes it was Sanzo and jealousy ensues as well as Sanzo being annoyed that someone he can't stand is following him and worshipping him. Yeah, good plot, done it before and it worked.
With you, however, it did not work. Let me tell you why. You seem to have forgone the bit about GRADUALLY bringing the two together and jumped right into this sort of...weird placeholder thing where you had Gat say 'I'll pretend I'm Sanzo for you, Hazel'. Wait. What!? Okay, I realize Gat is Hazel's loyal bodyguard/valet/servant/what have you, but that's going a bit far. He had dignity, you know. Yes, you're playing him being in love with Hazel but the thing is, Gat can probably live without sex and he has his dignity and pride, he would not offer to pretend to be someone he isn't so he could be Hazel's proverbial dildo for the night. That is insane.
After that, you were so desperate for HAWT yaoiz that you had Sanzo come to Hazel in his room without Hazel having to work for it at all or beg or plead or make offers and ultimatums and you just gave him free sex. It wasn't even tossing him a pity fuck which would have still made no sense but I could have let slide because, who knows, maybe Sanzo felt some small connection or something...but no...you confessed your love. I died a little inside when you did that. I guess I should thank my lucky stars that you're not demanding that Hazel wear a pretty little schoolgirl uniform as well. Look, I love Hazel, I really do, he's an epic character, however he's pretty much a manipulative, intelligent, snarky sort of guy who, like most public figures who can play that card, plays up the down-home southern everyguy charm while really plotting things. When he says something like 'Aww, shucks, ah'm jus' gonna head on up ta mah bed an' get some shut eye, pleasant dreams, y'all!' he most likely means 'You demon bastards ain't worth mah time, 'scuse me while ah get back ta more pressin' matters, like exterminatin' yer race.'
So yeah...Knock it off. Keep the characters in character and please stick to the storyline. If I wanted porn without plot, I'd look for some on AFF.
EDIT: Oh, and I got carried away ranting and forgot to MENTION the worst part. Now, I don't remember much of my lessons on actual Native American culture in social studies, most of my recent knowledge comes from Disney's Pocahontas and other completely inaccurate media, but I don't think there is or ever was a berry that causes Mpreg hijinks.
TL;DR: Cowboy buttsecks isn't a replacement for plot, y'all.