Should i tell someone?

I went out on Saturday night with loads of my friends and we was all having a drink. Anyway it got to around 1/2am and I needed a wee and I thought it would be a good idea to walk to tescos to use the toilets. My good lad friend followed behind me and told me i couldn't walk on my own. When we was walking he kept telling me that he loved me and he's liked me for ages. He kept kissing me, well trying and asking me if he could have cuddles when went got back to the tent with everyone. After we had a wee and started to walk back he asked his we could sit on the park for 5 minutes before we walked back and I said ok. Then he tried to finger me. He put his hands down my leggings and my pants and I kept saying no and tried pulling his hand out and he tried again and was like "I just want to keep my hand warm" and I pulled it out again and I said I wanted to walk back. He carried on trying to kiss me and stuff and when we got to the tent he kept trying to discreetly put his hand in my leggings still. I felt so uncomfortable and dirty. And everyone else left so I told him I wanted to go. And now he's saying that it was me always telling him I love him and always meeting him and stuff. And my boyfriend knows what happened but nobody else and everything's getting on top off me but I'm too scared to say anything. My boyfriend doesn't really think it's a big deal but I'm too scared to tell anyone because this time last year another "friend" raped me and when I told somebody nobody believed me and it's just tearing me apart. I have nobody😭