There's a considerable difference between liking only dark chocolate and not liking the concept of chocolate completely. One portrays love limitedly, and the other one depicts hatred. Little things matter, if not they could become inescapable hurdles, especially in a person's romantic life. During the phase of dating, the things that matter less may turn out to be deep loopholes during the phase of a committed relationship. This thin line difference between choosing a partner who is different from you and choosing someone entirely different may cost a person's life in every possible way.
Most commonly, couples talk about their similarities in their initial phases of dating, they try to know each other's deeper interests in those similarities and they get along with the positive aspects of similarities by completely overlooking the prominent component of knowing each others' differences. Indeed, two people must talk about their differences more than their similarities, because those differences make those two people understand whether they have different preferences or else have entirely different personalities.
Simply, you can share your bed with someone who likes to have sex after making a connection but you can never share intimacy with a person who doesn't prefer sex at all. Don't you think your life would be a living hell if you miss out on this huge difference? Woefully, many couples commit this grave mistake and get into serious relationships; sadly, some of those couples can't even get out of such relationships because of various possible reasons. One wrong move may lead your romantic life in a completely different direction.
Tastes, preferences, likes, and dislikes can be different in a similar concept but can never be entirely two different concepts. If you and your dating partner try to know each other and find a similar interest in books, as you remain, ardent bibliophiles, then your genres of reading books can be different and it is quite understandable as two people can have different interests in choosing books. Your book-reading genres can be different but the concept behind reading books should never be entirely different. Make sure your dating partner also reads books as a hobby or to attain knowledge or as a therapy, instead of reading them to use it as a mode of destruction. In simpler words, if you love the romance genre then it is fine if your partner loves science fiction but if you choose the genre to uplift your moods when your partner chooses the genre to destroy someone or something, then you people are two entirely different personalities and should never date each other.
Generally, people don't focus on deeper clarity when they try to know each other. They rush up and get over-excited after knowing similar interests or dealing with each other's minute differences. Until and unless a couple gets into a committed relationship, they can't explore each other differences deeply but regrettably, by the time they get the proper clarity on each other, everything slips out of hands for a few couples. To get rid of this serious romantic situation, one must be alert in the initial phase of dating to know each others' differences first and relate whether they are just different or entirely different.
Differences are common. Interracial couples, interregional couples, intercommunal couples, interreligious couples are the walking examples who shine out of their cultural and traditional differences. Even though those couples belong to various backgrounds, that spark of romance with a tint of understanding differences, makes them excel in their romantic life scenarios. Most importantly differences aren't about race, community, region, country, or religion. They are all about mindsets and the way how a person looks at a particular concept.
An introvert and an extrovert can get into a relationship even though their traits are different. An introverted person may restrict oneself with limited people whereas an extrovert may have unlimited connections with people. But if you are an extrovert who loves people, get into a relationship with an introvert who practically doesn't like the concept of people and sometimes even restricts you to enter his/her space, then your relationship becomes a disaster because you both are entirely different from each other.
Similarities need not be evaluated deeply but one must scrutinize the differences of opinions, differences of roles, differences of mindsets, differences of decision-making capabilities, differences of extremism, differences of knowledge in a few worldly subjects, differences of understanding each other gender identities, and sexual orientations, differences of being futuristic, differences of lifestyle and life scenarios are the most important ones to discuss before getting into a serious committed relationship. And this takes a lot of time for a couple to know each others' differences. So, it's better to take things slow to be with a person who is different from you than rush things up to be with an entirely different person. Period!