i went to local abs, went into theatre, when my eyes adjusted saw four guys around one guy kneeling. i moved into the circle that's when i saw him sucking cock, my bil! i moved away quickly!! then, stood up and bent over, the 1st guy entered his ass, bare back! i'm mixed up, should i confront him about this, i mean it's my sister's safety aaftey all?

I would. Blowjobs are one thing, as is protected sex, but this isn't being hypocritical. If he was single then fine,or if sis knows, fine. But you should ask if he's been tested and if he's on PREP.

thank you for advice, how do i confront him? i mean should i just tell him i saw him at abs and in doing so let him know that i too visit abs for blow jobs?

I'd find a time and place you can have a quiet minute with him and tell him that you get him visting an ABS, as you do so yourself and that's how you saw him, and that's why you're concerned. There's no guarantee he'll change his behavior with barebacking it, but at least it's out there so it's worth a shot. If he's not in PREP tell him to get on it. Be civil. If he thinks you're out to wreck his life or out him, if not in words, but through tone and action, it could all blow up in everyone's faces.

str8cocksucker, thank you for advice, i'll talk with him asap!

Let me know how it goes.

had talk he didn't confirm nor deny the abs, but said advise was good

Good

str8, thanks

and now to abs, i need a bj