Boyfriend can't make me orgasm?!

I've been with my boyfriend for nearly 8 months now, and he's never been able to fully finish me off when we get frisky. 
It never phased me that much, but he always feels bad because he's never made me orgasm. 
Now I'm worried in case it's because I'm not sexually attracted to him or something - but I love him more than anything! 
Can anyone please help 😭