How does Shelley include the theme of Love in her book? And how does it still mean something in Modern Society?

Although Frankenstein deals mostly with heavier themes, love plays a role in the novel's plot and character interactions. Here are some prominent examples:
1. Victor Frankenstein's family: Victor describes his young life as very happy and pleasant. His family loves each other, and this love shapes his early life. It serves as an ironic contrast to his adult life.
2. Victor's relationship with Clerval: Henry Clerval is Victor's best friend, and he loves him like a brother. It is a tragic twist when the monster kills Henry to get revenge on Victor.
3. Victor's relationship with Elizabeth: These two characters are close since childhood and eventually marry one another. Elizabeth is Victor's support system for part of his adult life, and she is very understanding and sympathetic. Unfortunately, Victor isolates himself and puts his wife at risk by not building the creature a mate; the monster reciprocates by killing Elizabeth on Victor and Elizabeth's wedding night.
4. Safie and Felix: Felix De Lacey and his beloved Safie are two of the members of the family that the monster observes when he lives outside their home. He learns about family and about true love between parents and children but also between husband and wife. The creature learns from Safie and Felix, as well as from his reading of Paradise Lost, that a man is meant to be paired with a female partner. He then petitions his creator, Victor, to build him a companion. Although disgusted, Victor originally agrees and works on the female creature; however, he eventually destroys her. This is a crucial plot point because after this, the creature's revenge knows no bounds.
5. Victor and the creature: The lack of love Victor has for his creature is also key to the novel as a whole. If Victor had cared for this being whom he brought to life and nurtured him like a real parent, the tragedies of the novel could have been avoided.