I feel guilty but I use a vibrator after having sex with my bf

I can’t often spend the night at his place so in the evening after we have sex and I get home, I will use a vibrator. Or if I do stay the night then the next day at home I will use it. He doesn’t know this. I’m not even sure he knows I have a vibrator.

Sex with him is great. I love it and he knows what he’s doing but I don’t cum the way I do with a vibrator when I’m with him.

Idk if this is me cumming but when I’m with him he makes me squirt or it feels really good but idk if I get that climaxing feeling with him. But maybe it’s a different type of orgasm??? Bc it feels great but not as great as I feel with a vibrator.

I want to tell him this but I’m worried it’ll make him upset. Because he often thinks I’ve cum when I’m with him, not because I’m faking it but because it genuinely does feel good and then he thinks I’ve came and then we move on