Tintin wakes up snuggling someone, a deeply unfamiliar sensation. For a moment he freezes, taking stock of his circumstances; then he remembers. Rose Bowers. Giant man. Therapy? More giant man.
Ari, that was it. Ari, who... took his virginity. Very thoroughly. Should he care more about that? No, that was what the therapy was about, he doesn't have to keep things in boxes like that. He had sex with Ari, and it was nice.
He turns to snuggle his bedmate more enthusiastically. And, in the process, rub against his extravagantly massive morning wood. (The secondary endowment apparently faded at some point overnight.)