lol my bet is on second personality since he seems traumatized from childhood and waaaay too tense so it does not seem too far fetched to think he developped seecond personality which can actually relax .But it sounds horrifying to wake up find your life turned completely upside (like life partner, moving , becoming the omega he tried not to be ....) brrr I would be sooo pissed.
Kojirase Omega no Nidome no Koi