How to get dick wet??

Me and my boyfriend have been having sex for 6 months now and it is fabulous. I naturally get wet during foreplay so that when he fingers me, it's easy and comfortable. However, when he tries to insert his 'dry' dick straight away, it just won't fit! 
I must admit he's quite girthy and we always have to reach for lube. I've tried sucking him off beforehand, but that seems to dry very quickly. 
We are both new to the sex scene, so any tips would be lovely!