"My Bloody Valentine" is Chapter 199 of Tsurezure Children. It is centred around Alice Himemiya and Akimasa Noro.
It's Valentines Day once again, but over Christmas break, Alice was rejected by Haruhiko. Alice has become sad that she can't give him chocolate anymore, while Akimasa calls out to Alice. Akimasa teasingly asks who the chocolate is for, although he retracts that and comments about how he shouldn't say that. He then leaves, adding that he'll be waiting for her in his the classroom.
Afterwards, Alice is in the bathroom about to throw away her chocolate, when she overhears Saki and Yuki talking about how Saki saw Alice and Haruhiko together at Christmas. Saki talks about how she only likes Haruhiko because he's fun to be around, while Alice lives for him. Alice decides to intrude, reassuring Saki that she was rejected, then leaves.
Now having nothing left to live for, Alice is alone in her classroom. Akimasa asks if she's ok, explaining how she didn't come to his class and went to check on her. Alice tells him to go away, saying she doesn't have any chocolate left. Akimasa pushingly tells her he doesn't need chocolate, and just wants to talk to her. He explains how he wants to talk to her more, although Alice tells him to go away again, thinking about how similar Akimasa's words are to when Haruhiko first talked to her.
Suddenly, Akimasa confesses that he can't leave her alone because he likes her, and asks to go out with her. Alice starts crying, while Akimasa panics about what he did wrong.