In English grammar, a comma splice or comma fault is the use of a comma to join two independent clauses. For example: It is nearly half past five, we cannot reach town before dark.
It's known as the Literary Tone. Hope I helped !
Because a sonnet is a love poem as such, therefore they speak this way to convey a sense of passion and also lust, it is effective as it is a love poem as i mentioned, therefore it is self explanatory
