33 year old partner, has no sex drive-Very hard on relationship for me!

My boyfriend is 33- and has almost 0 interest in sex, or sexual activities.. we are very intimate, but as soon as it becomes sexual he falls asleep, gets distracted or takes a rain check..

This is very hard on me as I am at the other end oft the scale. Has anyone been through this or know where I can get support resources?

Thanks