How can you girls cum?

Sarah

I can orgasm yes (not from penetration) but I never was able to cum. Orgasm is like 5 seconds then everything is over. Penetration is not fun to me whatsoever. I just do it because it makes my boyfriend cum. But for me noo. Plus is it weird that sex only lasts like 3 or 5 minutes with us?

We are done so quickly.

I really wanna come. Any tips?