Is it wrong to want my boyfriend to get attracted to other girls?

Me f(19) and my boyfriend m(19) are in a long term relationship and it went quite good for the past 3 years.... Now i want him to get attracted(physically not emotionally) to other girls... i searched google,asked chatgpt for days to know if this feeling is ok or not and im still confused.... I confronted him and first he denied like he doesnt want a third person to involve in our relationship. But now he says he is ok with that after so many discussions...