"I have faith in his ability to do so." When God heard that phrase, he immediately informed that, beside Touma, Ty and his family, everyone would forget about the demoness, her entrance in the church and her revelations.
After what he teleported the demoness and her possible future in-laws to the house of said in-laws.
At first, they wondered why Touma was sent home with them, but before they could ask, God answered them. "While Touma got her own soul, making her morally human, she still has the body of a succubus, and so got the needs of one. Thankfully, while Ty don't need sleep anymore, being an angel, he still can, and I highly advise him too, so his demonic girlfriend can enter his dreams."
"You want me to…?!?" Panicked the horrified demoness. "But that could KILL HIM!!!"
"He's an angel now, his stamina is infinite. I may forbid you from taking his virginity in the physical world, but in his dreams you should go all out, to make sure you wont need to discretely go making out with someone else during school time."
Touma was about to ask where is her bedroom, but June beat her to it. "Where is going to sleep your pet project?" She said, pointing at Touma. "We only have three bedroom, and they're already all taken."
"First, Touma's redemption isn't a ‘pet project’, but a serious matter!" God scolded. "And secondly, if Dustin exchange room with his brother, there would be enough place for her and Ty to sleep together."
"You want them to share a bed?!?"
"Ty is an angel now, he can change his body as he see fit. I'm sure he can find a form Touma won't try to have sex with. And since you doubt me, your God, so much; why don't you do the necessary change alone?"
Then, God spoke to Touma & Ty alone, making sure only them could hear him. "Now, the harder part for the two of you. To truly be your girlfriend's guardian angel, you need to accept to always know what she think and feel, to strip her from any chance to surprise you, even in a good way. And the worst part, your love may make it a definitive thing."
Looking her in the eyes, Ty saw she was more than okay with it, she WANTED it. The one-way mental link established itself, and then Ty understood why. His succubus may want to repent herself and have an absolute faith in both God and him, Touma hadn't any faith in her ability to become good, not at all.