sex adviceee

So kind of embarrassing but me and my boyfriend regularly have sex and we have been for quite a while. Recently he hasn’t been lasting long enough for it to be enjoyable for me. I don’t want to upset him by speaking on this but i was wondering if anyone knows of ways i could make our sex a little lengthier.

Ps i’m already big on foreplay for him i heard that helps but maybe it’s making it worse ?