I'm been feeling guilty for years

When I was 7 or 8, I started to get very curious about sex. I'm going to start from the beginning. I had a friend and I brought it up, and she was curious too. We decided we'd try it out for ourselves. We went into her bed and took or clothes off and basically just "kissed" and laid on top of one another. This went on for about a year, alternating houses. Next, I had another friend and brought up the idea again. She was interested. We didn't take our clothes off, but laid on top of each other and "kissed". At 8 or 9 I did this with another friend, not taking our clothes off again but just kind of role playing and laying close and cuddling ig. It's been YEARS, but I still can't get over it. Should I still feel guilty about this? I just feel so bad! I can't get it out of my mind and I feel so guilty :(