Having a hard time finishing

Meghan • Live well, laugh often, love much
My boyfriend is having a hard time finishing during sex without jerking off. We really try to focus on forplay and I go down on him for a good 10 to 12 minutes before we have sex. Is there anything I can do to help. I like that he can last but, sometimes it takes so long sex isn't fun anymore. I just want our sex that is good to get even better for the both of us.