hnggg

can someone help me find a manga actually i’m looking for two:
one of em has three childhood besties one girl and two guys guy1 has always liked guy2 but guy2 liked the girl and they were dating as they grew up they got married but the girl died in an accident guy2 fell into depression and guy1 comforted him then soon had sex and guy1 confesses and they guy2 commited suicide :p
The other manga:(omegaverse) I’m not quite sure since i read this years ago but i remember a scene where he was waiting on the front door of his crush(i think) but when his crush sees him he saw a bite mark on his neck and the dude was only there to say bye(maybe)(〜￣△￣)〜