Sort of on the flip side to this. Best mate of (at the time 15 years), always overweight, once moved out of home got his shit together, lost weight, started training with me, was making gains etc. Then get introduced to girlfriend that had been kept under wraps for about 3-6 months. Landwhale. And while I'm running Social Protocol: Pleasantries v1.1 I'm screaming internally "Motherfucker were you so desperate for feels you had to accept that into your life?" 2.25 years later (GF moved into his place), dietary habits of the GF contaminated his lifestyle and combined with a lack of resistance all gains lost and about 10-15kg of fat put on.