Aftab Amin Poonawalla and Shraddha Walker had met via the dating app Bumble. The live-in romantic relationship went horribly wrong with Aftab now being accused of Shraddha's murder. Experts say that while it's difficult to predict how a person will turn out to be, there are some basic dos and don'ts that one should keep in mind while navigating the world of dating and relationships.