Ok. So my best friend is currently dating a girl I have had sex
with numerous times. During this time I've had had sex with
many other girls while having a shitty girlfriend(she's a a joke,
trust me, plus she's gone Yoyo). Anyhow, my friend is more
like my brother who I wish I could see more of,(he now live's
far away and we both are currently in poverty)

I told him if he wished to talk about our activities he could ask
me anytime and I wouldn't lie(true enough to scare some ppl).
My only problem is, I know my friend is very gentle hearted,
very loving, and sensitive when it comes to his girls, otherwise,
he's a total hardass.

He's told me he's ok as long as I didn't infect her with an STD,
and I assured him I get checked regularly(again, completely true)
He is the jealous type and even though I can honestly say I don't
understand I try to. I really don't see her and him really hitting it off
and becoming engaged or any of the sort but I cannot let a girl
come between our friendship. He is a very genuine and caring
person, and I would literally hate myself if anyone were to bring
us to battle(plus, he's a freakin' giant!)

So, what would you all recommend if it were to come to this?
I really,really, don't trust this girl with my friend and his flaky
feelings.

build a timemachine and go back and never have sex with her.

or

murder the girl so that she can no longer be an issue

or

have sex with your friend, alternating roles of catcher and pitcher, put little effort into it but make it look like you are, this way he will think he is the better lay and wont worry about you

pr

cut off half of your penis, then take the removed end and cut the head off and superglue that back to the still connected part of your dick. then one day make it look like you have something embarassing and personal to tell him. let him force it out of you. when he does, show him your dick and how small it (now) is. his will undoubtedly be much bigger, and assuming he is a typical retard male, nothing could possibly bother him

or

talk to him openly and honestly just like you talked to us. communicate.

A cross between one and two could be fun....But I'm gonna have to go for the last option.

Tell him this.