No, romance itself does not directly increase breast size. Breast size is primarily determined by genetics, hormone levels, and body fat distribution. While increased levels of estrogen during pregnancy or puberty can lead to breast growth, romantic relationships do not significantly influence these hormonal fluctuations.
It is possible that feeling happy and comfortable in a relationship might lead to weight gain, which could result in a slight increase in breast size due to increased fat deposits. However, this is not a direct consequence of romance itself, but rather a result of changes in body composition.
