HELP FINDING A BL

So I read this bl like four years ago so I'll try my best to give as musch details as I can remember, so there's this mc who I think went into the past, died and went into the past, or the other ml acted like he forgot the mc.but the ml was dating a girl and I think the mc had a bracelet that the ml gave to the mc and when the ml and his girlfriend came back from the trip (the mc had a suitcase with him to btw I think) but he went to confess with ml and told him something but the ml said that he didn't remember or know and just acted dum or smth but then the ml girlfriend was confused and all but then he just left the mc. But that's all I can remember so can someone plz help