Board Thread:Off Topic/@comment-28745050-20160614060931/@comment-25396609-20160625225843

Think of it this way; Summer was there for him when Raven left, she likely helped raise Yang for those two years before Ruby was born. Taiyang is clearly a very emotional man, and when he was in a place in that place in his life any existing feelings for Summer (be they friendship or a romantic interest that was overshadowed by Raven previously) would have developed quite easily

Humans are strange like that; we can hold very similar feelings for two different people, if one of them leaves our life then then we will naturally be drawn to the one who is still there.

You seem to feel like his love for Raven switching to Summer was in some way adulterous; but imagine yourself in his shoes.

The one you love left without a word, leaving you alone and your new born child with only one parent. Someone you already cared for on some level steps in and fills the role the child's own parent left.

Tell me you wouldn't fall in love with them, and assuming they held those same feelings for you that it would not lead to a relationship which both romantic AND sexual.