I kissed someone while dating someone else

it's been a year. Don't bring up the past for no reason.

You weren't really exclusive when it happened, no need to dwell over it or bring it up. Just forget it ever happened

My friends and I aren’t close anymore. What if he finds out?

ok well if your friends are close with you i doubt they're close with him.
the past is the past, stop living in it and start living in the future.

My boyfriend and I had started dating recently. We weren’t planning on being together for long since we both were heading off to college in separate countries.One night my friends and I went clubbing, I was really drunk and a random guy kissed me. It meant nothing, I didn’t even know his name. We left the club after this incident. My friends told me not to tell him since we weren’t planning on dating for long. However, as we spent more time together, we fell in love and did one year of long distance. It’s been more than a year to this incident but I don’t know if I should tell him or not. It really bothers me and I don’t want to hurt our relationship over something that meant nothing but I know telling him will end things. I love him and I’ve never felt like this for anyone. What do I do?

Any way to get over the fear of him finding out?