Was I raped?

I feel so awful and guilty. I'm sad and I feel disgusting. I (23 f) had a friend over last night (26 m) things were fine and we were having fun, playfully joking around. He's one of my best friends and knows I'm in a active relationship but he came onto me like he got on me and started kissing on me. I admit it felt good but I didn't want it. Immediately I pushed him off or tried to. I begged him to stop. I kept saying how I didn't want to cheat on my bf he is so sweet and I really love him but my friend wouldn't stop until I gave in. He just was do aggressive and he kept saying "just this time and we can keep it between us" only I feel like I did something horrible and I'm scared to tell my bf. I don't want him to think I cheated. Please help. Was this rape or sexual coercion?