am I a bad gf?

Fanatic_Reflection
So around last year me and my bf (3 1/2 years) broke up for 3 months. I thought I was never gonna see him again or be with him again and I had sex with 2 people. (He's my first) so the other 2 people were to kinda fill the hole I had from breaking up and had no meaning or feelings out into it. Was actually kinda terrible. Now that we're back together and want to have this future together I feel guilty because I never told him I had sex with 2 other guys. It wouldn't matter as much if he wasn't my first but he is and I feel like it's wrong to have him think he's the only one I've been with. I'm not his first but we have a special relationship and this would crush him. I never said anything because I didn't want him to leave me for something dumb that I didnehile we weren't together. He wouldn't have understood and I was scared but should I be? Should I feel guilty? Sometimes I forget about it. I do plan on one day telling him but I feel like it shouldn't be this big of an anxious thing to tell.