Your boyfriend walks out of the bathroom, but something didn’t feel right. The person who walked out of the bathroom wasn’t your boyfriend anymore, but rather your dad.
Your dad/boyfriend/former girlfriend speaks in a deep and manly baritone voice, “Hey, son.” His mind had shifted to acknowledge his own “son”. You then begin to say, “Hey dad”. You then realize that your “father” has his mind changed to know his son & nothing else.
You then ask your “dad” if s/he know what happened earlier & he says “I was just at work, my boss came and told me I was getting a promotion, & that got me excited. Afterwards, I went to the store and bought some stuff for the house”.
Your “dad” leaves to get changed and then went to the kitchen. You think to yourself, “Does she still have memories of herself somewhere in there or does she think she’s really my dad?”. You have determination to figure it out & you go up to her/him.