
I think he wanted to be a good brother now that the obstruction was dead but before he could his sister went off ro get married and never contacted him. I think he just wants some of her time but Cardi gets like 99.5% of it sooooo he gets petty. Also cardi gets petty which is a vicious cycle really. Both men have never really had a loving family so she becomes the focus point of all that affection that has nowhere to go

You aren't wrong. I think he gave her her space in the last life because she cut off contact and he thought she wanted to cut ties. Though I don't disagree this type of personality is already annoying when it is the ML. I also hate it when this petty relationship happens with father and son fighting over the FL
The brother acting like he is so in love with his sister seems hypocritical