I don't know what the answer is OP. I'm so sorry this has happened to you my love.
After the #metoo movement it had me thinking about a time when I was 19 (I'm 49 now) at university and I got myself so drunk I ended up in a hotel with a guitarist from a band that was playing in the city I was living in.
I was very very drunk and I don't remember him taking me to his room. When I woke up in the morning I was naked and he was on top of me. I pushed him off and got dressed and went back to my halls. I told no-one about it; I was a bit embarrassed I'd got myself into such a situation to tell the truth. He kept in touch with me for a month or two by letter and occasional phonecall, but we didn't meet again, and I wasn't bothered. I just got on with my studies and moved on.
Years later, and it's got me thinking was this one night stand actually a rape? I've come to the conclusion that it was. I put myself in a very vulnerable position but he raped me without consent. Only back then I didn't realise that that is what it was.
Thirty years down the line I'm married with three grown up kids and I've been going over my past and how, if I'd reported it back then I think I would have been the one to blame. But I know now I wasn't to blame.
Saying all that, and it feels weird to write that experience on a public (anonymous) forum when I have never ever told a living soul, it has not impacted on my life, except that now I think he did something to me that he shouldn't have done. A very very long time ago. But does his whole life, and mine, need to go through the trauma of reporting? Police investigations, questioning, recriminations, lives possibly ruined? He hasn't ruined mine, that's for sure. So no, I won't be reporting this historic crime.
I'm not traumatised, just resigned to the fact that it happened to #metoo. I just don't think it would be to anyone's benefit to report something that happened such a long time ago.
@Betterisbutter your story may be very different to mine, or quite similar, and I hope you get some closure on it. I'm only sorry I can't offer any further advice about whether or not to report. Hopefully someone reading your post will have some practical advice for you. Best wishes to you x