That's what Al is calling it. He does not have words to describe how much he doesn't want to hear what they're calling it.

And he will be right there supporting her through all of it. At least until post canon when the Envy face-sucking may resume. See how he's offering to beat up spikey hair? All it'll take is a word from her and ground worm on a plate!

He says it's not mutual seduction; he's teaching Envy to be a person. With his tongue.