Well, you obviously had a risk. The thing is, you know one of them and he said he's on prep and he's used condoms with you previously. Why would he lie? And the second guy? Well, I don't know. Chances are he really has tested and is not hiv+. Regardless, the risk is quite SMALL. Less than 1 percent transmission rate for a one time sexual encounter. You'll need to test at 28 days with a 4th generation DUO test but would expect it to be negative. Honestly, your 'friend' who put you in this position sounds like a jerk for it so I'd not get together with him again.
There are too many missing words and irrelevant things in that long story to make sense of it. No one here knows if they lied.
Just answer this.
Was a condom used for anal?