* Hamlet's love for Ophelia is already strained before Gertrude's actions: Hamlet is deeply disturbed by his father's death and his mother's hasty marriage to Claudius. This emotional turmoil affects his relationship with Ophelia, leading him to act erratically and reject her.
* Gertrude's actions contribute to the deterioration of Hamlet's mental state: Hamlet's love for his mother is complicated by her marriage to Claudius, whom Hamlet sees as a villain. He believes she has betrayed his father's memory. This deeply wounds him and fuels his anger and madness.
* Ophelia is caught in the middle: Ophelia is caught between Hamlet's erratic behavior and her loyalty to her family. She becomes a pawn in the political game and her own mental health suffers.
* The ultimate blame rests on the actions of Claudius: Claudius's manipulation of Ophelia and her father Polonius, as well as his murder of Hamlet's father, are the primary factors contributing to the tragic ending of Hamlet and Ophelia's relationship.
Therefore, while Gertrude's actions contribute to the unraveling of the situation, she is not solely responsible for ending Hamlet and Ophelia's love.
It's important to remember that Hamlet is a complex play, and the relationships between the characters are multi-layered and driven by various factors.