YAOIWAT

hey yall i'm looking for a manga i randomly remembered a scene of but i dont remember the name

i just remember it was an abo manga, main character was dating an alpha but that alpha ended up finding his fated pair and left the mc. the mc then went on to date another alpha who was the brother of his ex(?). but then i think this alpha also reacted to his fated person and mc thought his current bf was gonna leave him like his ex but his bf stayed with him in the end

pls gimme bl recommendations where the couple are switches