Nope. Not in book 1, Volume 1. Although the MC does start off heartbroken but then after that, he has other things to worry about (romance is the furthermost thing from his mind.) As for future books... I don't foresee anything of the sort for him for quite some time because of his age, as for his elder sister, her romance will mostly be offscreen. The person she's interested in and/or with may pop up from time to time.... but even then, that won't happen until the other books. Hope this clears things up a bit.