Aquarius Rebel (Written in the Stars #6)
Sundari Venkatraman

Chirag Bhatia runs an ad agency and is based in Delhi. The youngest of three siblings, he's happy to let his older sisters provide the grandchildren for his parents to play with, while he himself prefers to lead the life of a gay bachelor.
Sparks strike when they meet each other for the first time. And it isn’t long before they enter a rocking affair. They don’t even let the distance cramp their style over the next four years.
Until one day, Chirag receives Shreya’s wedding invitation, to someone else. Shocked out of his wits, he’s finally ready to admit to himself that he might be in love. But what if it is too late?