Would you take this serious?

I have a kindergartner that’s been telling me about a girl having a crush on him and telling him he’s romantic, etc. I thought it was adorable at first but now he keeps coming home saying things like she’s telling him she’s in love with him, they’re dating, she cheated on her other boyfriend with him, she kisses him on the cheek and says she loves him, and that there are other couples that are breaking up. Now I feel like it’s going too far and the teacher isn’t properly watching them