From my perspective, India always seemed like a better ally to the American people, Pakistan to the American military/intelligence branches.

India courted the soviets which didn't help.

It's a little more complicated than that. This was mostly a reaction to Pakistan courting the US. Note also that India was first a founding member of the non-aligned movement, which the US was not pleased about. US-India relations improved during the 1962 Sino-Indian war when the US countered Chinese aggression at any cost. They then deteriorated again when the Nixon administration openly supported Pakistan in the 1971 Bangladesh liberation war.

India was never the aggressor, just look at the history. It's Chinese who invaded Indian Himalayan territory and annexed some Indian land. Same with Pakistan - it's them who invaded Indian territory in Kashmir in 1999 in thousands.

It's stupid from Chinese to act like there is already hostility between them, when they could act as partners that have literally 1/3 of global population and dominate the region.

India's modern history perhaps, but Indian influence once stretched all across SE Asia. Angor Wat is the largest Hindu temple in the world[1], for example; Bali is all that remains of Hindu control of Indonesia[2]. Though it seems unlikely that the PRC government is thinking in those terms.

1: https://en.wikipedia.org/wiki/Angkor_Wat#History 2: https://en.wikipedia.org/wiki/Bali#Ancient

Ankor Wat was built by a local king.

No Indian empire invaded or controlled SE Asia. The influence of Buddhism and Hinduism in Bali and Cambodia is testament to the influence of Indian philosophy and belief not might.

The Sino Indian war is more complicated than that,

http://timesofindia.indiatimes.com/india/It-wasnt-China-but-...