Does your man keep an erection while giving you oral?

I feel bad sometimes because when we were first married, he'd get so hard just from giving me oral sex. Now, 6 years later, he doesn't really have much of an erection while giving me oral unless something is directly stimulating his penis: a toy, my hand, his hand, my thigh, etc. I guess giving oral isn't too stimulating for men but it used to be for him a big turn on to be licking me out and being between my legs. Of course he still says it's a huge turn on for him and he's always willing to give me tongue action on my pussy, since him inside me doesn't quite get me off (though it feels AMAZINGLY awesome!), but I can see he obviously has little to no erection while licking/sucking me. His erections are just fine when his penis is being stimulated or he's thrusting during our normal PIV activity. Just wondering if other ladies experience this situation too while you're receiving oral pleasure . Thanks for dropping a line or two here! ☺