Relationships can be messy, including between startup founders and their venture investors. But in a case that takes messy to an extreme, an insurtech company in Santa Monica, Calif. called Sure is alleging that its Series A investor used privileged information to provide to a New York-based startup called Boost that the venture firm incubated and that quickly evolved into a competitor to Sure. Sure further assets that the venture firm — 29-year-old IA Capital Group of New York — has continued to “harass” Sure over information rights that it is no longer entitled to receive.