Lube?!

Faith
Best lube to use?! I wanna get a lubricant for my boyfriend and I, even though I'll give him a bj before hand it still feels dry.
He's staying over this weekend so any insight asap would be great 😂
We're trying to spice things up anyways and my first thought was the KY Jelly? Or maybe just petroleum jelly? We don't use condoms, I also have the mirena iud.
My concern too, if you have any insight, is he loves bj's and we'll usually alternate what we're doing, and idk if I'll want to with lube on his dick.
LMK ladies, thanks!! 😁