>>510083015 (OP)because her 30yo ass is ugly, but her 18yo ass was probably still reasonably attractive.
relationships are, to a very large degree, about sexual attraction and intimacy.
if every look in her face makes it hard for me to even get hard, there's zero point in wasting my time on her.
it's different if I was already in her relationship with her when she was young and then she grew older - at that point we bonded over other stuff that can compensate for the lowered sexual attraction.
but there's no reason for me to start a relationship from scratch, but with zero sexual attraction from the very beginning.