I am very happy with my sex life and either way the sex is great, but I can't come with my boyfriend inside me, or even with him doing other things to try and make me come. I masturbate and come within like a minute most of the time. He jokes and says it's because I got used to a powerful vibrator, but am I really hopeless for coming with him just because I masturbate with a vibrator?! I just want him to be the one to do it. He's been close, but only made me do it once fully and that was with him fingering me and using a vibrator. 

Any tips/advice/ that help make you come?!!