It would strain their relationship even more. Snape's love for Lily was already on shaky ground due to their different paths. Seeing her with James would make him feel like she has completely chosen the other side, and he might start to resent her a bit.
He might be filled with intense jealousy and pain. Snape has deep feelings for Lily, so seeing her with James would be like a dagger to his heart. He could feel a mix of anger towards James and self - loathing for not being the one with Lily.
One possible plot development could be that Lily initially feels shocked and confused. She might start to question her relationship with James, especially if she has some unacknowledged feelings for him. This event could also cause a rift in her friendship with Sirius, as she may feel betrayed that he didn't tell her about his relationship with James. It could lead to a series of confrontations and emotional outbursts among the three of them, forcing them to re - evaluate their relationships and their own identities within their group.
Well, it's a really heart - breaking moment for Snape. He loved Lily deeply, and seeing her with James, who he had a rivalry with, must have been like a dagger to his heart. His love for Lily was complex and seeing this would have filled him with a mix of jealousy, rage, and deep sadness.
It would most likely have a huge impact on Lily's relationship with James. If she has any romantic feelings for him, seeing him kiss Sirius would be a big blow. She might become distant from James, feeling jealous or just plain confused. As for her relationship with Sirius, she could feel betrayed, like he's stolen James away from her in some way. This could lead to a lot of tension and awkwardness between them all.
In many fanfictions, when Snape sees Lily and James, it's a turning point for his character. He could see their relationship as a sign of his own inadequacy, which might initially make him more vengeful. However, as time passes, he might come to understand that his actions are driving Lily further away. This realization could lead to a more complex Snape. He might struggle with his feelings, trying to balance his love for Lily with his dislike for James. Eventually, he might grow to accept their relationship, but still hold a special place in his heart for Lily. This new - found acceptance could make him more empathetic towards others in the long run.
It can intensify the conflict. Snape's jealousy can lead to more confrontations between him and James, which might draw in their respective friends and create more chaos at Hogwarts.
One common theme is the 'forbidden love' aspect. Since they were from different houses at Hogwarts (Lily was a Gryffindor and James was a Gryffindor but had a bit of a 'bad boy' image at first), their relationship might be seen as something that was not expected. Another theme could be the build - up of their relationship. Fanfictions often explore how they went from disliking each other to falling in love and having that first kiss.
In many fanfictions, Snape's jealousy of James and Lily can be deeply rooted in his unrequited love for Lily. Snape had a complex relationship with Lily from their childhood. He loved her deeply, but she fell in love with James. This led to his intense jealousy. His envy towards James was not just about Lily's love, but also about James' popularity and charm which Snape felt he lacked.
Love and jealousy are very common themes. Snape's unrequited love for Lily while she is with James creates a lot of jealousy. It often drives the plot as Snape's actions are influenced by his feelings.