I know Dan is gay and may not have much experience with straight couples, but when a woman goes down on you she'll just tell you not to come in her mouth, otherwise the assumption is you can come in her mouth. Sure you can let her know you are close, but in many cases "close" is a millisecond too late.

I think Dan probably gives, and gets, better head than most of us straight couples. I'll have to disagree with "greater than" above, I like a little warning of when a load is about to be busted, and any man who has any business taking his cock out around others should be able to let you know he's coming before it is in fact a millisecond too late.