Watch Love & Engineering for Free: How to Stream the Movie Online at 123Movies. . Love & Engineering is for everyone who has experienced uncertainty, had a crush on someone or been on a date. The film asks what are our so-called “feelings” and can we can control them or not. Challenges of the dating world are approached through the perspective of male engineers: how to encounter people in the real world? The film reveals that falling in love happens in three phases and that charming your date could be just a matter of adept hacking skills!