F19 just witnessed my friend f29 getting fucked by old man

i was on a trip with my childhood friend and she got herself a old Mann , sheeee showed me her video getting fucked by him 😭, i wish I had some old man for me, i was on an educational trip to delhi with my childhood friend f19 , she is my sweetheart nd my bestie, she is exploring her sexuality since years ,she tells me all about her adventures but I couldn't show interest about it, but when we were on educational trip she brought a guy(his one of casual friend, which was 39M) and we talked a few minutes then after they started cuddling right in front of me, after a while I got up for bed it was raining so I was cold , I used blanket and tried to sleep they thought I slept or maybe didn't care whether I was sleeping or not and started making out , curiosity get the better of me and i  peeked through the blanket they were half naked doing all the crazy things kissing smooches, and all she kissed his thing and he went down on her, but the boy then refused to go any further maybe because of me, I was shocked to see such a thing, I had never experienced anything like this before, i couldn't even finger myself it's uncomfortable, only pleasure I get is from rubbing clit, i wished they continued it , so that I could have seen it alll 😭😭😭