Heard this from several punters as the main reason they don't DATY WGs. That they don't want to eat another dude's jizz, bla bla bla.
It always makes me wonder, what exactly do you guys do when you DATY? Do you actually stick your tongue in and try to "eat" what she's got in there?
If this is what you've been doing, sorry to say this bro, that's not how you do DATY. A good technique doesn't even involve any penetration of her pussy by your tongue.