Maybe I skip something but the fact he got upset his husband had someone else but then went and got with three people at the same time... (=・ω・=) It was interesting though
It's different though? His husband was SA'd since he got set up by his grandpa to impregnate an omega he didn't know and was a stranger to him. He DIDN'T want that, both of them (MC and his husband) DIDN'T want then and were in love with each other. At the end of MC's first life he decided to end himself bcs he was worn out seeing his husband be "together" with that omega when his husband clearly didn't like the omega and was forced to care for the omega bcs he was the one to impregnate him but keep i mind he was RAPED but had to take responsibility for the guy.
In the second life MC wanted to end his marriage with his past husband but suddenly there was pheromones and they had sex. MC was informed he needed intake of an alpha's pheromone and he decided to "hire" one from the guild bcs he was unsure of his past husband, where the other MLs (guildmaster? And knight) and he had sex. They also reached a consensus that they will take care and be responsible for MC and the child inside him.
This was how I interpreted and saw it, some details are hazy but this is practically the whole picture ╮( ̄▽ ̄)╭
Must be destiny yesterday I felt like rereading this again and today... IT'S BACK!